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Employee Benefit Plans - Plan Assets (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | --- | ---
Level 3 |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | $ 177 | $ 204 | $ 93
U.S. |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 7,942 | 9,919 |
U.S. | Level 1 |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 2,370 | 3,268 |
U.S. | Level 2 |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 851 | 1,027 |
U.S. | Level 3 |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 54 | 48 |
U.S. | NAV |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 4,667 | 5,576 |
Int’l. |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 3,286 | 4,950 |
Int’l. | Level 1 |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 515 | 1,091 |
Int’l. | Level 2 |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 483 | 735 |
Int’l. | Level 3 |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 123 | 156 |
Int’l. | NAV |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 2,165 | 2,968 |
U.S. | U.S. |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 1,358 | 1,677 |
U.S. | U.S. | Company's Own Stock |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 0 | 0 |
U.S. | U.S. | Level 1 |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 1,358 | 1,677 |
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 | 164 | 491 |
U.S. | Int’l. | Level 1 |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 164 | 491 |
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 | 0 | 1 | 1
International | U.S. |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 946 | 1,285 |
International | U.S. | Level 1 |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 946 | 1,284 |
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 | 0 | 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 | 120 | 356 |
International | Int’l. | Level 1 |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 120 | 355 |
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 | 0 | 1 |
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 | 1,695 | 2,541 |
Collective Trusts/Mutual Funds | U.S. | Level 1 |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 4 | 32 |
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 | 1,691 | 2,509 |
Collective Trusts/Mutual Funds | Int’l. |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 87 | 134 |
Collective Trusts/Mutual Funds | Int’l. | Level 1 |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 6 | 6 |
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 | 81 | 128 |
Government | U.S. |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 110 | 215 |
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 | 110 | 215 |
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 | 185 | 229 |
Government | Int’l. | Level 1 |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 127 | 135 |
Government | Int’l. | Level 2 |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 58 | 94 |
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 | 0
Corporate | U.S. |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 680 | 660 |
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 | 680 | 660 |
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 | 343 | 532 |
Corporate | Int’l. | Level 1 |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 15 | 2 |
Corporate | Int’l. | Level 2 |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 328 | 530 |
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 | 0 | 2
Bank Loans | U.S. |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 45 | 137 |
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 | 45 | 136 |
Bank Loans | U.S. | Level 3 |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 0 | 1 |
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 | 1,616 | 1,907 |
Collective Trusts/Mutual Funds | U.S. | Level 1 |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 0 | 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 | 1,616 | 1,894 |
Collective Trusts/Mutual Funds | Int’l. |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 1,750 | 2,388 |
Collective Trusts/Mutual Funds | Int’l. | Level 1 |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 0 | 1 |
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 | 1,750 | 2,387 |
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 | 87 | 99 |
Mixed Funds | Int’l. | Level 1 |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 14 | 12 |
Mixed Funds | Int’l. | Level 2 |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 73 | 87 |
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 | 38 | 42 | 45
Real Estate | U.S. |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 1,184 | 1,172 |
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 | 1,184 | 1,172 |
Real Estate | Int’l. |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 198 | 312 |
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 | 38 | 42 |
Real Estate | Int’l. | NAV |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 160 | 270 |
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 | 200 | 264 |
Cash and Cash Equivalents | U.S. | Level 1 |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 25 | 263 |
Cash and Cash Equivalents | U.S. | Level 2 |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 0 | 1 |
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 | 175 | 0 |
Cash and Cash Equivalents | Int’l. |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 80 | 161 |
Cash and Cash Equivalents | Int’l. | Level 1 |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 69 | 89 |
Cash and Cash Equivalents | Int’l. | Level 2 |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 2 | 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 | 9 | 69 |
Other | Level 3 |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 139 | 161 | $ 45
Other | U.S. |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 107 | 60 |
Other | U.S. | Level 1 |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 37 | (1) |
Other | U.S. | Level 2 |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 15 | 14 |
Other | U.S. | Level 3 |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 54 | 46 |
Other | U.S. | NAV |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 1 | 1 |
Other | Int’l. |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 268 | 244 |
Other | Int’l. | Level 1 |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 0 | 0 |
Other | Int’l. | Level 2 |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 18 | 17 |
Other | Int’l. | Level 3 |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | 85 | 113 |
Other | Int’l. | NAV |  |  |
Fair Value Measurements of Company's Pension Plans |  |  |
Fair value of plan assets | $ 165 | $ 114 |

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