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Employee Benefit Plans - Pension Plans (Details) - Pension Plan - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2001	Dec. 31, 2020
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Consecutive months with highest compensation in which benefits are based		60 months
Months ending at retirement or termination in which benefits are based	120 months
Discount rate	2.35%		1.85%
Benefit obligation	$ 154		$ 153
Fair value of plan assets	$ 145		$ 157

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- Definition

Defined Benefit Plan, Consecutive Months with Highest Compensation in which Benefits are Based

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Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan.

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Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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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.

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