Pensions Benefit Plans and Other Postretirement Benefits - Net Amount Recognized Included in Consolidated Balance Sheets (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Net amount recognized included in the Consolidated Balance Sheets
Pension assets	$ 67	$ 42
Pension Benefit Plans | U.S. | Funded Plan
Net amount recognized included in the Consolidated Balance Sheets
Current pension liability and nonpension postretirement benefit, included with other accrued liabilities	(2)	(1)
Pension benefits and nonpension postretirement benefits	(264)	(289)
Accumulated other comprehensive income (loss)	708	722
Net amount recognized	442	432
Pension Benefit Plans | Non-U.S. | Funded Plan
Net amount recognized included in the Consolidated Balance Sheets
Pension assets	67	42
Current pension liability and nonpension postretirement benefit, included with other accrued liabilities	(8)	(6)
Pension benefits and nonpension postretirement benefits	(257)	(239)
Accumulated other comprehensive income (loss)	334	332
Net amount recognized	136	129
Other Post-retirement Benefits | U.S. | Funded Plan
Net amount recognized included in the Consolidated Balance Sheets
Current pension liability and nonpension postretirement benefit, included with other accrued liabilities	(2)	(5)
Pension benefits and nonpension postretirement benefits	(36)	(67)
Accumulated other comprehensive income (loss)	(15)	9
Net amount recognized	(53)	(63)
Other Post-retirement Benefits | Non-U.S. | Funded Plan
Net amount recognized included in the Consolidated Balance Sheets
Current pension liability and nonpension postretirement benefit, included with other accrued liabilities	(3)	(3)
Pension benefits and nonpension postretirement benefits	(77)	(68)
Accumulated other comprehensive income (loss)	(7)	(1)
Net amount recognized	$ (87)	$ (72)