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Goodwill (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Goodwill
Goodwill, impairment loss	$ 2,515	$ 0	$ 0	$ 2,515
Level 3 | Valuation Technique, Discounted Cash Flow | Measurement Input, Discount Rate
Goodwill
Goodwill impairment analysis, discount rate, cost of capital, theoretical market participant	14.00%

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- Definition

Estimate of cost of capital for theoretical market participant used in goodwill impairment analysis.

+ References

No definition available.

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- Definition

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.

+ References

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- Definition

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+ References

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