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Employee Benefit Plans - Plan Assets (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Level 3
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	$ 204	$ 93	$ 112
U.S.
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	9,919	9,930
U.S. | Level 1
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	3,268	4,747
U.S. | Level 2
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	1,027	1,171
U.S. | Level 3
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	48	44
U.S. | NAV
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	5,576	3,968
Int’l.
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	4,950	5,363
Int’l. | Level 1
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	1,091	1,406
Int’l. | Level 2
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	735	798
Int’l. | Level 3
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	156	49
Int’l. | NAV
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	2,968	3,110
U.S. | U.S.
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	1,677	2,286
U.S. | U.S. | Company's Own Stock
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	4
U.S. | U.S. | Level 1
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	1,677	2,286
U.S. | U.S. | Level 2
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
U.S. | U.S. | Level 3
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
U.S. | U.S. | NAV
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
U.S. | Int’l.
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	491	443
U.S. | Int’l. | Level 1
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	491	443
U.S. | Int’l. | Level 2
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
U.S. | Int’l. | Level 3
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
U.S. | Int’l. | NAV
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
International | Level 3
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	1	1	1
International | U.S.
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	1,285	2,211
International | U.S. | Level 1
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	1,284	2,210
International | U.S. | Level 2
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
International | U.S. | Level 3
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	1	1
International | U.S. | NAV
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
International | Int’l.
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	356	373
International | Int’l. | Level 1
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	355	373
International | Int’l. | Level 2
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
International | Int’l. | Level 3
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	1	0
International | Int’l. | NAV
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Collective Trusts/Mutual Funds | U.S.
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	2,541	1,107
Collective Trusts/Mutual Funds | U.S. | Level 1
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	32	48
Collective Trusts/Mutual Funds | U.S. | Level 2
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Collective Trusts/Mutual Funds | U.S. | Level 3
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Collective Trusts/Mutual Funds | U.S. | NAV
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	2,509	1,059
Collective Trusts/Mutual Funds | Int’l.
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	134	192
Collective Trusts/Mutual Funds | Int’l. | Level 1
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	6	7
Collective Trusts/Mutual Funds | Int’l. | Level 2
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Collective Trusts/Mutual Funds | Int’l. | Level 3
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Collective Trusts/Mutual Funds | Int’l. | NAV
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	128	185
Government | U.S.
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	215	231
Government | U.S. | Level 1
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Government | U.S. | Level 2
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	215	231
Government | U.S. | Level 3
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Government | U.S. | NAV
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Government | Int’l.
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	229	240
Government | Int’l. | Level 1
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	135	125
Government | Int’l. | Level 2
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	94	115
Government | Int’l. | Level 3
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Government | Int’l. | NAV
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Corporate | Level 3
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0	3
Corporate | U.S.
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	660	778
Corporate | U.S. | Level 1
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Corporate | U.S. | Level 2
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	660	778
Corporate | U.S. | Level 3
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Corporate | U.S. | NAV
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Corporate | Int’l.
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	532	578
Corporate | Int’l. | Level 1
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	2	10
Corporate | Int’l. | Level 2
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	530	568
Corporate | Int’l. | Level 3
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Corporate | Int’l. | NAV
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Bank Loans | Level 3
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	2	7
Bank Loans | U.S.
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	137	129
Bank Loans | U.S. | Level 1
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Bank Loans | U.S. | Level 2
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	136	127
Bank Loans | U.S. | Level 3
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	1	2
Bank Loans | U.S. | NAV
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Bank Loans | Int’l.
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Bank Loans | Int’l. | Level 1
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Bank Loans | Int’l. | Level 2
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Bank Loans | Int’l. | Level 3
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Bank Loans | Int’l. | NAV
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Mortgage/Asset Backed | U.S.
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	1	1
Mortgage/Asset Backed | U.S. | Level 1
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Mortgage/Asset Backed | U.S. | Level 2
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	1	1
Mortgage/Asset Backed | U.S. | Level 3
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Mortgage/Asset Backed | U.S. | NAV
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Mortgage/Asset Backed | Int’l.
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	4	4
Mortgage/Asset Backed | Int’l. | Level 1
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Mortgage/Asset Backed | Int’l. | Level 2
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	4	4
Mortgage/Asset Backed | Int’l. | Level 3
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Mortgage/Asset Backed | Int’l. | NAV
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Collective Trusts/Mutual Funds | U.S.
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	1,907	1,901
Collective Trusts/Mutual Funds | U.S. | Level 1
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	13	13
Collective Trusts/Mutual Funds | U.S. | Level 2
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Collective Trusts/Mutual Funds | U.S. | Level 3
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Collective Trusts/Mutual Funds | U.S. | NAV
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	1,894	1,888
Collective Trusts/Mutual Funds | Int’l.
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	2,388	2,520
Collective Trusts/Mutual Funds | Int’l. | Level 1
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	1	4
Collective Trusts/Mutual Funds | Int’l. | Level 2
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Collective Trusts/Mutual Funds | Int’l. | Level 3
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Collective Trusts/Mutual Funds | Int’l. | NAV
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	2,387	2,516
Mixed Funds | U.S.
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Mixed Funds | U.S. | Level 1
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Mixed Funds | U.S. | Level 2
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Mixed Funds | U.S. | Level 3
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Mixed Funds | U.S. | NAV
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Mixed Funds | Int’l.
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	99	127
Mixed Funds | Int’l. | Level 1
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	12	38
Mixed Funds | Int’l. | Level 2
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	87	89
Mixed Funds | Int’l. | Level 3
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Mixed Funds | Int’l. | NAV
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Real Estate | Level 3
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	42	45	55
Real Estate | U.S.
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	1,172	1,018
Real Estate | U.S. | Level 1
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Real Estate | U.S. | Level 2
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Real Estate | U.S. | Level 3
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Real Estate | U.S. | NAV
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	1,172	1,018
Real Estate | Int’l.
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	312	448
Real Estate | Int’l. | Level 1
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Real Estate | Int’l. | Level 2
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Real Estate | Int’l. | Level 3
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	42	45
Real Estate | Int’l. | NAV
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	270	403
Alternative Investments | U.S.
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Alternative Investments | U.S. | Level 1
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Alternative Investments | U.S. | Level 2
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Alternative Investments | U.S. | Level 3
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Alternative Investments | U.S. | NAV
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Alternative Investments | Int’l.
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Alternative Investments | Int’l. | Level 1
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Alternative Investments | Int’l. | Level 2
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Alternative Investments | Int’l. | Level 3
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Alternative Investments | Int’l. | NAV
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Cash and Cash Equivalents | U.S.
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	264	221
Cash and Cash Equivalents | U.S. | Level 1
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	263	209
Cash and Cash Equivalents | U.S. | Level 2
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	1	12
Cash and Cash Equivalents | U.S. | Level 3
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Cash and Cash Equivalents | U.S. | NAV
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Cash and Cash Equivalents | Int’l.
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	161	417
Cash and Cash Equivalents | Int’l. | Level 1
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	89	408
Cash and Cash Equivalents | Int’l. | Level 2
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	3	3
Cash and Cash Equivalents | Int’l. | Level 3
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	0
Cash and Cash Equivalents | Int’l. | NAV
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	69	6
Other | Level 3
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	161	45	$ 46
Other | U.S.
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	60	47
Other | U.S. | Level 1
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	(1)	(19)
Other | U.S. | Level 2
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	14	22
Other | U.S. | Level 3
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	46	41
Other | U.S. | NAV
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	1	3
Other | Int’l.
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	244	21
Other | Int’l. | Level 1
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	0	(2)
Other | Int’l. | Level 2
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	17	19
Other | Int’l. | Level 3
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	113	4
Other | Int’l. | NAV
Fair Value Measurements of Company's Pension Plans
Fair value of plan assets	$ 114	$ 0

X

- Definition

Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

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