v3.20.4
Financial Instruments - Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Equity securities [1] $ 567 $ 705
Total other noncurrent assets 4,569 4,199
Total assets 154,229 167,594
Total liabilities 1,100 718
Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total assets 14,278 11,176
Government and agency debt - non-U.S. [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, debt securities 7,725 4,863
Government and agency - U.S. [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, debt securities 1,103 1,114
Corporate and Other [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, debt securities [2] 1,008 1,025
Level 1 [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total assets 2,776 1,863
Level 2 [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total assets 11,501 9,313
Short-term Investments [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, debt securities 9,709 6,687
Total short-term investments 10,276 7,392
Short-term Investments [Member] | Money market funds [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Equity securities 567 705
Short-term Investments [Member] | Government and agency debt - non-U.S. [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, debt securities 7,719 4,863
Short-term Investments [Member] | Government and agency - U.S. [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, debt securities 982 811
Short-term Investments [Member] | Corporate and Other [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, debt securities 1,008 1,013
Short-term Investments [Member] | Level 1 [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, debt securities 0 0
Total short-term investments 0 0
Short-term Investments [Member] | Level 1 [Member] | Money market funds [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Equity securities 0 0
Short-term Investments [Member] | Level 1 [Member] | Government and agency debt - non-U.S. [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, debt securities 0 0
Short-term Investments [Member] | Level 1 [Member] | Government and agency - U.S. [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, debt securities 0 0
Short-term Investments [Member] | Level 1 [Member] | Corporate and Other [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, debt securities 0 0
Short-term Investments [Member] | Level 2 [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, debt securities 9,709 6,687
Total short-term investments 10,276 7,392
Short-term Investments [Member] | Level 2 [Member] | Money market funds [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Equity securities 567 705
Short-term Investments [Member] | Level 2 [Member] | Government and agency debt - non-U.S. [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, debt securities 7,719 4,863
Short-term Investments [Member] | Level 2 [Member] | Government and agency - U.S. [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, debt securities 982 811
Short-term Investments [Member] | Level 2 [Member] | Corporate and Other [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, debt securities 1,008 1,013
Other Current Assets [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Current derivative assets 251 465
Other Current Assets [Member] | Recurring [Member] | Interest rate contracts [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Current derivative assets 18 53
Other Current Assets [Member] | Recurring [Member] | Foreign exchange contracts [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Current derivative assets 234 413
Other Current Assets [Member] | Level 1 [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Current derivative assets 0 0
Other Current Assets [Member] | Level 1 [Member] | Recurring [Member] | Interest rate contracts [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Current derivative assets 0 0
Other Current Assets [Member] | Level 1 [Member] | Recurring [Member] | Foreign exchange contracts [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Current derivative assets 0 0
Other Current Assets [Member] | Level 2 [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Current derivative assets 251 465
Other Current Assets [Member] | Level 2 [Member] | Recurring [Member] | Interest rate contracts [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Current derivative assets 18 53
Other Current Assets [Member] | Level 2 [Member] | Recurring [Member] | Foreign exchange contracts [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Current derivative assets 234 413
Long-term Investments [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Equity securities [3] 2,809 1,902
Available-for-sale securities, debt securities 128 315
Total long-term investments 2,936 2,216
Long-term Investments [Member] | Government and agency debt - non-U.S. [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, debt securities 6 0
Long-term Investments [Member] | Government and agency - U.S. [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, debt securities 121 303
Long-term Investments [Member] | Corporate and Other [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, debt securities 0 11
Long-term Investments [Member] | Level 1 [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Equity securities [3] 2,776 1,863
Available-for-sale securities, debt securities 0 0
Total long-term investments 2,776 1,863
Long-term Investments [Member] | Level 1 [Member] | Government and agency debt - non-U.S. [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, debt securities 0 0
Long-term Investments [Member] | Level 1 [Member] | Government and agency - U.S. [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, debt securities 0 0
Long-term Investments [Member] | Level 1 [Member] | Corporate and Other [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, debt securities 0 0
Long-term Investments [Member] | Level 2 [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Equity securities [3] 32 39
Available-for-sale securities, debt securities 128 315
Total long-term investments 160 354
Long-term Investments [Member] | Level 2 [Member] | Government and agency debt - non-U.S. [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, debt securities 6 0
Long-term Investments [Member] | Level 2 [Member] | Government and agency - U.S. [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, debt securities 121 303
Long-term Investments [Member] | Level 2 [Member] | Corporate and Other [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available-for-sale securities, debt securities 0 11
Other Noncurrent Assets [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Noncurrent derivative assets 122 526
Insurance contracts [4] 693 575
Total other noncurrent assets 814 1,102
Other Noncurrent Assets [Member] | Recurring [Member] | Interest rate contracts [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Noncurrent derivative assets 117 266
Other Noncurrent Assets [Member] | Recurring [Member] | Foreign exchange contracts [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Noncurrent derivative assets 5 261
Other Noncurrent Assets [Member] | Level 1 [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Noncurrent derivative assets 0 0
Insurance contracts [4] 0 0
Total other noncurrent assets 0 0
Other Noncurrent Assets [Member] | Level 1 [Member] | Recurring [Member] | Interest rate contracts [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Noncurrent derivative assets 0 0
Other Noncurrent Assets [Member] | Level 1 [Member] | Recurring [Member] | Foreign exchange contracts [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Noncurrent derivative assets 0 0
Other Noncurrent Assets [Member] | Level 2 [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Noncurrent derivative assets 122 526
Insurance contracts [4] 693 575
Total other noncurrent assets 814 1,102
Other Noncurrent Assets [Member] | Level 2 [Member] | Recurring [Member] | Interest rate contracts [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Noncurrent derivative assets 117 266
Other Noncurrent Assets [Member] | Level 2 [Member] | Recurring [Member] | Foreign exchange contracts [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Noncurrent derivative assets 5 261
Other Current Liabilities [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Current derivative liabilities 501 114
Other Current Liabilities [Member] | Recurring [Member] | Foreign exchange contracts [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Current derivative liabilities 501 114
Other Current Liabilities [Member] | Level 1 [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Current derivative liabilities 0 0
Other Current Liabilities [Member] | Level 1 [Member] | Recurring [Member] | Foreign exchange contracts [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Current derivative liabilities 0 0
Other Current Liabilities [Member] | Level 2 [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Current derivative liabilities 501 114
Other Current Liabilities [Member] | Level 2 [Member] | Recurring [Member] | Foreign exchange contracts [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Current derivative liabilities 501 114
Other Noncurrent Liabilities [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Noncurrent derivative liabilities 599 604
Total liabilities 1,100 718
Other Noncurrent Liabilities [Member] | Recurring [Member] | Foreign exchange contracts [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Noncurrent derivative liabilities 599 604
Other Noncurrent Liabilities [Member] | Level 1 [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Noncurrent derivative liabilities 0 0
Total liabilities 0 0
Other Noncurrent Liabilities [Member] | Level 1 [Member] | Recurring [Member] | Foreign exchange contracts [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Noncurrent derivative liabilities 0 0
Other Noncurrent Liabilities [Member] | Level 2 [Member] | Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Noncurrent derivative liabilities 599 604
Total liabilities 1,100 718
Other Noncurrent Liabilities [Member] | Level 2 [Member] | Recurring [Member] | Foreign exchange contracts [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Noncurrent derivative liabilities $ 599 $ 604
[1] As of December 31, 2020 and 2019, includes money market funds primarily invested in U.S. Treasury and government debt.
[2] Primarily issued by a diverse group of corporations
[3] Long-term equity securities of $190 million as of December 31, 2020 and $176 million as of December 31, 2019 were held in restricted trusts for employee benefit plans.
[4] Includes life insurance policies held in restricted trusts for U.S. non-qualified employee benefit plans. The underlying invested assets in these contracts are marketable securities, which are carried at fair value, with changes in fair value recognized in Other (income)/deductions—net (see Note 4).