Goodwill and Intangible Assets (Narrative) (Details) - USD ($)	3 Months Ended	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Goodwill and Intangible Assets [Abstract]
Goodwill	$ 503,000,000		$ 503,000,000		$ 512,000,000
Impairment charges	14,000,000
Goodwill impairment charges	9,000,000	$ 0		$ 0
Intangible asset impairment charges	5,000,000
Accumulated impairment loss					$ 0
Amortization expense	$ 2,000,000	$ 2,000,000	$ 6,000,000	$ 8,000,000

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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