Goodwill - Schedule of Goodwill (Details) $ in Millions	3 Months Ended
Jun. 30, 2022 USD ($)
Changes in the carrying amount of goodwill by segment [Roll Forward]
Goodwill, beginning balance	$ 617
Divestitures	(9)
Assets held for sale	(3)
Foreign currency translation	(23)
Goodwill, gross	10,138
Accumulated impairment losses	(9,556)
Goodwill, ending balance	582
GBS
Changes in the carrying amount of goodwill by segment [Roll Forward]
Goodwill, beginning balance	617
Divestitures	(9)
Assets held for sale	(3)
Foreign currency translation	(23)
Goodwill, gross	5,072
Accumulated impairment losses	(4,490)
Goodwill, ending balance	582
GIS
Changes in the carrying amount of goodwill by segment [Roll Forward]
Goodwill, beginning balance	0
Divestitures	0
Assets held for sale	0
Foreign currency translation	0
Goodwill, gross	5,066
Accumulated impairment losses	(5,066)
Goodwill, ending balance	$ 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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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount before 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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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of transfers into (out of) an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of divestiture 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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