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Acquisitions and Dispositions of Businesses - Assets and Liabilities Held for Sale (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Business Combination and Asset Acquisition [Abstract]
Assets held for sale	$ 122	$ 0
Liabilities held for sale	$ 38	$ 0

- Definition

Amount classified as assets attributable to disposal group held for sale or disposed of, expected to be disposed of within one year or the normal operating cycle, if longer.

+ References + Details

- Definition

Amount classified as liabilities attributable to disposal group held for sale or disposed of, expected to be disposed of within one year or the normal operating cycle, if longer.

+ References + Details