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Goodwill and Intangible Assets (Narrative) (Details) - USD ($)	3 Months Ended		12 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Goodwill [Line Items]
Goodwill impairment		$ 62,000,000	$ 0	$ 99,000,000	$ 0
Goodwill			$ 2,060,000,000	1,761,000,000	$ 1,265,000,000
Energy Solutions
Goodwill [Line Items]
Goodwill impairment	$ 37,000,000
Goodwill	$ 19,000,000
Energy Solutions | Trade Names
Goodwill [Line Items]
Impairment of indefinite lived intangible assets				$ 11,000,000

X

- Definition

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.

+ References

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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