Acquisitions, Goodwill, and Acquired Intangible Assets - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Amortization expense for acquired intangibles	$ 512	$ 509	$ 565
Other Acquisitions
Business Acquisition [Line Items]
Aggregate purchase price	$ 496	1,200	$ 315
Amount capitalized to in-process research and development intangible assets		$ 1,100