Fair Value of Assets and Liabilities - Narrative (Details) - USD ($)	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information [Line Items]
Fair value, asset (liability), unrealized gain (loss), OCI	$ 0	$ 0
Corporate
Segment Reporting Information [Line Items]
Fixed asset impairments (current year less than)	$ 1,000,000	33,000,000
2019 Business Optimization \| Corporate \| Disposition of Acquired Properties
Segment Reporting Information [Line Items]
Asset impairment charges		$ 3,000,000

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 of unrealized gain (loss) recognized in other comprehensive income (OCI) from asset (liability) measured at fair value on recurring basis using unobservable input (level 3) and still held.

+ References

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The charge against earnings resulting from the aggregate write down of tangible assets from their carrying value to their fair value.

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