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Changes in Benefit Obligations and Plan Assets Table (Details) - Defined Benefit Pension Plan - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Net Periodic Benefit Cost
Net periodic pension cost	$ (1)	$ 0
Interest cost	4	3
Actuarial loss	2	3
Expected return on plan assets	(7)	(6)
Benefit Obligations
Defined Benefit Plan, Benefit Obligation	107	137
Fair value of plan assets	90	116
Underfunded at end of year	$ 17	$ 21

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