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Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 2,693
XUP acquisition measurement period adjustment	1
GradFin acquisition	58
Ending balance	2,752
Consumer Bank
Goodwill [Roll Forward]
Beginning balance	1,761
XUP acquisition measurement period adjustment	0
GradFin acquisition	58
Ending balance	1,819
Commercial Bank
Goodwill [Roll Forward]
Beginning balance	932
XUP acquisition measurement period adjustment	1
GradFin acquisition	0
Ending balance	$ 933

X

- Definition

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.

+ References

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X

- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition

Amount of increase (decrease) from adjustments after acquisition date under purchase accounting 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.

+ References

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X

- Definition

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

+ References

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