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Employee Benefit Plans - Allocation of Plan Assets (Details) - Fair Value, Recurring $ in Millions | Dec. 31, 2023 USD ($)
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Level 1 |
Defined Benefit Plan Disclosure [Line Items] |
Total investments at fair value | $ 608
Level 2 |
Defined Benefit Plan Disclosure [Line Items] |
Total investments at fair value | 6
Level 3 |
Defined Benefit Plan Disclosure [Line Items] |
Total investments at fair value | 0
Cash and cash equivalents | Level 1 |
Defined Benefit Plan Disclosure [Line Items] |
Total investments at fair value | 27
Cash and cash equivalents | Level 2 |
Defined Benefit Plan Disclosure [Line Items] |
Total investments at fair value | 0
Cash and cash equivalents | Level 3 |
Defined Benefit Plan Disclosure [Line Items] |
Total investments at fair value | 0
Equity securities | Level 1 |
Defined Benefit Plan Disclosure [Line Items] |
Total investments at fair value | 0
Equity securities | Level 2 |
Defined Benefit Plan Disclosure [Line Items] |
Total investments at fair value | 0
Equity securities | Level 3 |
Defined Benefit Plan Disclosure [Line Items] |
Total investments at fair value | 0
Fixed income securities | Level 1 |
Defined Benefit Plan Disclosure [Line Items] |
Total investments at fair value | 312
Fixed income securities | Level 2 |
Defined Benefit Plan Disclosure [Line Items] |
Total investments at fair value | 0
Fixed income securities | Level 3 |
Defined Benefit Plan Disclosure [Line Items] |
Total investments at fair value | 0
Other investments | Level 1 |
Defined Benefit Plan Disclosure [Line Items] |
Total investments at fair value | 269
Other investments | Level 2 |
Defined Benefit Plan Disclosure [Line Items] |
Total investments at fair value | 6
Other investments | Level 3 |
Defined Benefit Plan Disclosure [Line Items] |
Total investments at fair value | $ 0

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