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Employee Benefit Plans - Allocation of Plan Assets (Details) - Fair Value, Recurring - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
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Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total investments at fair value | $ 482 | $ 803
Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total investments at fair value | 100 | 205
Level 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total investments at fair value | 0 | 0
Cash and cash equivalents (1) | Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total investments at fair value | 43 | 230
Cash and cash equivalents (1) | Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total investments at fair value | 0 | 0
Cash and cash equivalents (1) | Level 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total investments at fair value | 0 | 0
Equity securities | Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total investments at fair value | 1 | 10
Equity securities | Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total investments at fair value | 40 | 93
Equity securities | Level 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total investments at fair value | 0 | 0
Fixed income securities | Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total investments at fair value | 137 | 202
Fixed income securities | Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total investments at fair value | 86 | 105
Fixed income securities | Level 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total investments at fair value | 0 | 0
Other investments | Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total investments at fair value | 301 | 361
Other investments | Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total investments at fair value | (26) | 7
Other investments | Level 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total investments at fair value | $ 0 | $ 0

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