Pension and Postretirement Benefit Plans - Plan Amount Narrative (Details) $ in Millions |
12 Months Ended | |
|---|---|---|
|
Dec. 31, 2018
USD ($)
country
plan
|
Dec. 31, 2017
USD ($)
|
|
| Unfunded Plans | ||
| Benefit Plan Information | ||
| Maximum amount of certain nonqualified unfunded pension and postretirement benefit plans obligations not included in benefit obligation reconciliation | $ | $ 40 | $ 40 |
| Qualified and Non-qualified Pension Benefits | ||
| Benefit Plan Information | ||
| Company-sponsored retirement plans, minimum number of worldwide plans | plan | 70 | |
| Company-sponsored retirement plans, number of countries | country | 26 | |
| Qualified and Non-qualified Pension Benefits | International | ||
| Benefit Plan Information | ||
| Company-sponsored retirement plans, minimum number of international plans | plan | 65 | |
| Company-sponsored retirement plans, number of countries | country | 25 | |