Employee Benefit Plans - Net Periodic Benefit (Income) Cost (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Postemployment Benefits [Member]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Net service cost	$ 24	$ 42	$ 31
Interest cost	2	3	3
Amortization of prior service cost	(2)	(2)	(2)
Actuarial loss (gain)	(4)	(4)	(3)
Defined Benefit Plan Net Periodic Benefit Costs, Subtotal	20	39	29
Postretirement Benefits [Member]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Interest cost	0	0	1
Amortization of prior service cost	0	(3)	(5)
Actuarial loss (gain)	(1)	1	0
Net periodic benefit cost	1	(2)	(4)
Pension Plan [Member]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Net service cost	6	6	7
Interest cost	42	64	85
Expected return on plan assets	(55)	(64)	(74)
Amortization of prior service cost	1	1	1
Actuarial loss (gain)	(118)	34	75
Net periodic benefit cost	(124)	41	94
U.S. Pension Benefits [Member]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Net service cost	0	0	0
Interest cost	34	51	66
Expected return on plan assets	(30)	(36)	(43)
Amortization of prior service cost	0	0	0
Actuarial loss (gain)	(40)	18	60
Net periodic benefit cost	(36)	33	83
International Pension Benefits [Member]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Net service cost	6	6	7
Interest cost	8	13	19
Expected return on plan assets	(25)	(28)	(31)
Amortization of prior service cost	1	1	1
Actuarial loss (gain)	(78)	16	15
Net periodic benefit cost	$ (88)	$ 8	$ 11