Divestitures - Narrative (Details) - Not Discontinued Operations - USD ($) $ in Millions	Jan. 19, 2021	Dec. 31, 2021
Aurora
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Fair value of common shares received		$ 1,277
Apparate USA LLC
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Derecognition of ATG Business' non-controlling interests	$ 1,100	1,057
Vesting period	12 months
Liability recognized for future obligations	$ 315	$ 315
Apparate USA LLC \| Aurora
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Fair value of common shares received	$ 1,300
Percentage of fully diluted common shares	22.00%
Percentage of undiluted shares	25.00%
Additional investment	$ 400
Percent of fully diluted convertible preferred shares	4.00%
Percent of undiluted convertible preferred shares	5.00%

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