v3.19.3.a.u2
Employee Benefit Plans - Fair values of pension plan assets (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Fair Value, Disclosure Item Amounts [Domain] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets $ 1,496 $ 1,249
Fair Value, Disclosure Item Amounts [Domain] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 4,297 3,345
U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 294 252
Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 3,258 2,442
US Equity Securities [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 101 94
US Equity Securities [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 435 371
International Equity Securities [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 98 80
International Equity Securities [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 266 241
Mutual Funds -Equity [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 93 76
Mutual Funds -Equity [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 512 394
Common Collective Trust Equity Securities [Member] | Portion at Net Asset Value [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 457 364
Common Collective Trust Equity Securities [Member] | Portion at Net Asset Value [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 167 153
US Government Debt Securities [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
US Government Debt Securities [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 1,412 889
Debt Security, Corporate, US [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 2 2
Debt Security, Corporate, US [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Debt Security Mutual Fund [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Debt Security Mutual Fund [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 392 363
Defined Benefit Plan, Common Collective Trust [Member] | Portion at Net Asset Value [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 637 548
Defined Benefit Plan, Common Collective Trust [Member] | Portion at Net Asset Value [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 760 641
Defined Benefit Plan, Cash and Cash Equivalents [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Defined Benefit Plan, Cash and Cash Equivalents [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 98 71
Defined Benefit Plan, Cash and Cash Equivalents [Member] | Portion at Net Asset Value [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 25 5
Defined Benefit Plan, Cash and Cash Equivalents [Member] | Portion at Net Asset Value [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Bank Time Deposits [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets   0
Bank Time Deposits [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets   6
Defined Benefit Plan, Derivative [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Defined Benefit Plan, Derivative [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 11 (17)
Defined Benefit Plan, Real Estate [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Defined Benefit Plan, Real Estate [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 132 124
Defined Benefit Plan, Real Estate [Member] | Portion at Net Asset Value [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 83 80
Defined Benefit Plan, Real Estate [Member] | Portion at Net Asset Value [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 112 109
Fair Value, Inputs, Level 1 [Member] | Fair Value, Disclosure Item Amounts [Domain] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 285 230
Fair Value, Inputs, Level 1 [Member] | Fair Value, Disclosure Item Amounts [Domain] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 2,859 2,137
Fair Value, Inputs, Level 1 [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 285 230
Fair Value, Inputs, Level 1 [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 2,859 2,137
Fair Value, Inputs, Level 1 [Member] | US Equity Securities [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 94 74
Fair Value, Inputs, Level 1 [Member] | US Equity Securities [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 435 371
Fair Value, Inputs, Level 1 [Member] | International Equity Securities [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 98 80
Fair Value, Inputs, Level 1 [Member] | International Equity Securities [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 266 241
Fair Value, Inputs, Level 1 [Member] | Mutual Funds -Equity [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 93 76
Fair Value, Inputs, Level 1 [Member] | Mutual Funds -Equity [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 245 213
Fair Value, Inputs, Level 1 [Member] | US Government Debt Securities [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 1 [Member] | US Government Debt Securities [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 1,412 889
Fair Value, Inputs, Level 1 [Member] | Debt Security, Corporate, US [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 1 [Member] | Debt Security, Corporate, US [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 1 [Member] | Debt Security Mutual Fund [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 1 [Member] | Debt Security Mutual Fund [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 392 363
Fair Value, Inputs, Level 1 [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 1 [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 98 71
Fair Value, Inputs, Level 1 [Member] | Bank Time Deposits [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets   0
Fair Value, Inputs, Level 1 [Member] | Bank Time Deposits [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets   6
Fair Value, Inputs, Level 1 [Member] | Defined Benefit Plan, Derivative [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 1 [Member] | Defined Benefit Plan, Derivative [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 11 (17)
Fair Value, Inputs, Level 1 [Member] | Defined Benefit Plan, Real Estate [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 1 [Member] | Defined Benefit Plan, Real Estate [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Disclosure Item Amounts [Domain] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 2 2
Fair Value, Inputs, Level 2 [Member] | Fair Value, Disclosure Item Amounts [Domain] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 267 181
Fair Value, Inputs, Level 2 [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 2 2
Fair Value, Inputs, Level 2 [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 267 181
Fair Value, Inputs, Level 2 [Member] | US Equity Securities [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 2 [Member] | US Equity Securities [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 2 [Member] | International Equity Securities [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 2 [Member] | International Equity Securities [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 2 [Member] | Mutual Funds -Equity [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 2 [Member] | Mutual Funds -Equity [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 267 181
Fair Value, Inputs, Level 2 [Member] | US Government Debt Securities [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 2 [Member] | US Government Debt Securities [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 2 [Member] | Debt Security, Corporate, US [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 2 2
Fair Value, Inputs, Level 2 [Member] | Debt Security, Corporate, US [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 2 [Member] | Debt Security Mutual Fund [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 2 [Member] | Debt Security Mutual Fund [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 2 [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 2 [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 2 [Member] | Bank Time Deposits [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets   0
Fair Value, Inputs, Level 2 [Member] | Bank Time Deposits [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets   0
Fair Value, Inputs, Level 2 [Member] | Defined Benefit Plan, Derivative [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 2 [Member] | Defined Benefit Plan, Derivative [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 2 [Member] | Defined Benefit Plan, Real Estate [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 2 [Member] | Defined Benefit Plan, Real Estate [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Disclosure Item Amounts [Domain] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 7 20
Fair Value, Inputs, Level 3 [Member] | Fair Value, Disclosure Item Amounts [Domain] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 132 124
Fair Value, Inputs, Level 3 [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 7 20
Fair Value, Inputs, Level 3 [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 132 124
Fair Value, Inputs, Level 3 [Member] | US Equity Securities [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 7 20
Fair Value, Inputs, Level 3 [Member] | US Equity Securities [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 3 [Member] | International Equity Securities [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 3 [Member] | International Equity Securities [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 3 [Member] | Mutual Funds -Equity [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 3 [Member] | Mutual Funds -Equity [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 3 [Member] | US Government Debt Securities [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 3 [Member] | US Government Debt Securities [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 3 [Member] | Debt Security, Corporate, US [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 3 [Member] | Debt Security, Corporate, US [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 3 [Member] | Debt Security Mutual Fund [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 3 [Member] | Debt Security Mutual Fund [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 3 [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 3 [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 3 [Member] | Bank Time Deposits [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets   0
Fair Value, Inputs, Level 3 [Member] | Bank Time Deposits [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets   0
Fair Value, Inputs, Level 3 [Member] | Defined Benefit Plan, Derivative [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 3 [Member] | Defined Benefit Plan, Derivative [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 3 [Member] | Defined Benefit Plan, Real Estate [Member] | U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets 0 0
Fair Value, Inputs, Level 3 [Member] | Defined Benefit Plan, Real Estate [Member] | Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Selected Plan Assets $ 132 $ 124