Employee Benefit Plans - Defined Benefit Plans Measured Using Significant Unobservable Inputs Level 3 (Details) - Pension Plan - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets - beginning	$ 9,796
Fair value of plan assets - ending	6,112	$ 9,796
U.S.
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets - beginning	2,544	2,802
Fair value of plan assets - ending	1,518	2,544
U.S. | Real estate
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets - beginning	61
Fair value of plan assets - ending	70	61
U.S. | Guaranteed Insurance Contracts
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets - beginning	0
Fair value of plan assets - ending	0	0
U.S. | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets - beginning	51
Fair value of plan assets - ending	57	51
U.S. | Level 3 | Real estate
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets - beginning	51	31
Purchases	0	15
Sales	(2)	0
Unrealized gains (losses)	8	5
Currency translation	0	0
Fair value of plan assets - ending	57	51
U.S. | Level 3 | Guaranteed Insurance Contracts
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets - beginning	0
Fair value of plan assets - ending	0	0
Non-U.S.
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets - beginning	7,252	7,199
Fair value of plan assets - ending	4,594	7,252
Non-U.S. | Real estate
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets - beginning	276
Fair value of plan assets - ending	215	276
Non-U.S. | Guaranteed Insurance Contracts
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets - beginning	75
Fair value of plan assets - ending	483	75
Non-U.S. | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets - beginning	243	297
Purchases	569	10
Sales	(24)	(38)
Unrealized gains (losses)	(142)	(10)
Currency translation	(15)	(16)
Fair value of plan assets - ending	631	243
Non-U.S. | Level 3 | Real estate
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets - beginning	164	208
Purchases	0	10
Sales	(19)	(33)
Unrealized gains (losses)	(10)	(12)
Currency translation	9	(9)
Fair value of plan assets - ending	144	164
Non-U.S. | Level 3 | Private Equity/Venture Capital
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets - beginning	4	3
Purchases	0	0
Sales	0	0
Unrealized gains (losses)	1	1
Currency translation	(1)	0
Fair value of plan assets - ending	4	4
Non-U.S. | Level 3 | Guaranteed Insurance Contracts
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of plan assets - beginning	75	86
Purchases	569	0
Sales	(5)	(5)
Unrealized gains (losses)	(133)	1
Currency translation	(23)	(7)
Fair value of plan assets - ending	$ 483	$ 75