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Goodwill and Intangible Assets (Narrative) (Details) - USD ($)	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Indefinite-lived Intangible Assets [Line Items]
Goodwill	$ 512,000,000				$ 512,000,000		$ 512,000,000
Goodwill impairment charges					0	$ 0
Accumulated impairment loss	0				0		$ 0
Amortization expense	$ 2,000,000		$ 3,000,000		$ 4,000,000	$ 6,000,000
Trade Names [Member]
Indefinite-lived Intangible Assets [Line Items]
Intangible asset impairment charges		$ 0		$ 0