Intangible Assets Including Goodwill - Goodwill by Segment (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
Jun. 30, 2022	Dec. 31, 2021
Changes in Goodwill Balances
Beginning Balance	$ 55,643.0	$ 53,765.0
Goodwill Additions	903.0	2,549.0
Purchase Price Adjustments	(121.0)	2.0
Divestitures	(485.0)	(50.0)
Foreign Currency Translation and Other Adjustments	(901.0)	(623.0)
Ending Balance	55,039.0	55,643.0
Goodwill impairment losses	0.0	0.0
Goodwill accumulated impairment losses	0.0	0.0
Software
Changes in Goodwill Balances
Beginning Balance	43,966.0	42,665.0
Goodwill Additions	442.0	1,836.0
Purchase Price Adjustments	(108.0)	23.0
Divestitures		(13.0)
Foreign Currency Translation and Other Adjustments	(674.0)	(545.0)
Ending Balance	43,626.0	43,966.0
Consulting
Changes in Goodwill Balances
Beginning Balance	6,797.0	6,145.0
Goodwill Additions	461.0	713.0
Purchase Price Adjustments	(13.0)	(21.0)
Foreign Currency Translation and Other Adjustments	(200.0)	(40.0)
Ending Balance	7,044.0	6,797.0
Infrastructure
Changes in Goodwill Balances
Beginning Balance	4,396.0	4,436.0
Purchase Price Adjustments		0.0
Divestitures	(1.0)
Foreign Currency Translation and Other Adjustments	(27.0)	(39.0)
Ending Balance	4,368.0	4,396.0
Other.
Changes in Goodwill Balances
Beginning Balance	484.0	520.0
Divestitures	(484.0)	(37.0)
Foreign Currency Translation and Other Adjustments		1.0
Ending Balance		$ 484.0
Other. \| Divested businesses \| Healthcare software assets divestiture
Changes in Goodwill Balances
Divestitures	$ (484.0)

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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