Accumulated Other Comprehensive Loss - Reclassifications (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2021 |
Mar. 31, 2020 |
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| Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] | ||
| Defined Benefit Plans | $ 12 | $ 8 |
| Tax expense of defined benefit plans | $ 3 | $ 2 |
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount, after tax, of reclassification adjustment from accumulated other comprehensive (income) loss for net periodic benefit cost (credit) of defined benefit plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of tax (expense) benefit for reclassification adjustment from accumulated other comprehensive (income) loss of defined benefit plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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