Retirement Plans and Post Retirement Benefits Defined Benefit Plans (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Retirement Benefits [Abstract]
Maximum benefit amortization period	20 years
Approximate percentage of assets represented by most significant plans	80.00%
Approximate percentage of benefit obligations represented by most significant plans	82.00%
Rate of eligible compensation increase	3.00%
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment and Tax	$ (1)	$ 3	$ 0
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax	$ 6	$ 5	$ 4

Defined Benefit Plan, Maximum Amortization Period

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- Definition

Defined Benefit Plan, Significant Plans, Approximate Percentage of Beneift Obligation Accounted for

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- Definition

Defined Benefit Plan, Significant Plans, Approximate Percentage of Plan Assets Accounted for

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- Definition

Defined Benefit Plan, Significant Plans, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase

+ References

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- Definition

Amount, before tax and reclassification adjustment, of (increase) decrease in accumulated other comprehensive income of defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

+ References

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- Definition

Amount, after tax, of reclassification adjustment from accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan.

+ References

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