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Goodwill and Intangible Assets - Goodwill Rollforward (Details) $ in Millions	3 Months Ended
	Apr. 30, 2023 USD ($)
Goodwill changes:
Goodwill, beginning balance	$ 1,535
Goodwill acquired during the year	1
Goodwill, ending balance	$ 1,536

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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