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Accounting Policies and Supplemental Disclosures - Acquisition Activity (Details) - USD ($) $ in Millions		1 Months Ended
	Feb. 22, 2023	Aug. 31, 2022	Sep. 30, 2023	Dec. 31, 2022
Business Acquisition [Line Items]
Goodwill			$ 22,749	$ 20,288
1Life Healthcare
Business Acquisition [Line Items]
Cash consideration	$ 3,500
Intangible assets	1,300
Goodwill	$ 2,500
iRobot Corporation
Business Acquisition [Line Items]
Acquisition price		$ 1,700