Employee Benefit Plans - Rollforward of Level 3 Plan Assets (Details) - Pension Plans - USD ($) $ in Millions |
12 Months Ended | |
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Dec. 31, 2021 |
Dec. 31, 2020 |
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Pension and Other Postretirement Plans | ||
Balance at beginning of period | $ 3,985 | $ 3,553 |
Balance at end of period | 3,605 | 3,985 |
Level 3 | ||
Pension and Other Postretirement Plans | ||
Balance at beginning of period | 61 | 53 |
Realized and unrealized gains | 1 | 5 |
Purchases, sales and settlements, net | 3 | 3 |
Balance at end of period | $ 65 | $ 61 |
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- Definition Amount, measured using unobservable inputs, of increase (decrease) in plan assets of defined benefit plan from actual return (loss) on assets still held. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- 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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, measured using unobservable input, of increase (decrease) in plan asset of defined benefit plan from purchase, sale and settlement of trade associated with underlying investment. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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