Goodwill and Other Intangible Assets - Changes in the Carrying Amount of Other Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	$ 1,544	$ 1,816	$ 1,816
Amortization	(60)	(61)	(238)
Foreign currency translation	9		(34)
Ending balance	1,493		1,544
Investment Servicing
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	1,495	1,746	1,746
Amortization	(54)		(217)
Foreign currency translation	9		(34)
Ending balance	1,450		1,495
Investment Management
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	49	$ 70	70
Amortization	(6)		(21)
Foreign currency translation	0		0
Ending balance	$ 43		$ 49

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount of foreign currency translation gain (loss) which increases (decreases) assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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