Customer Deposits (Details 2) $ in Millions	Mar. 31, 2021 USD ($)
Time Deposits By Maturity
2021	$ 2,965
2022	3,103
2023	664
2024	279
2025	209
After 5 years	4
Total	7,224
U.S.
Time Deposits By Maturity
2021	2,959
2022	3,101
2023	664
2024	279
2025	209
After 5 years	4
Total	7,216
Non-U.S.
Time Deposits By Maturity
2021	6
2022	2
2023	0
2024	0
2025	0
After 5 years	0
Total	$ 8

Time Deposit Maturities, After Year Four

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Amount of time deposit maturing in remainder of current fiscal year. Time deposit includes, but is not limited to, certificate of deposit.

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Amount of time deposit maturing in fourth fiscal year following current fiscal year. Time deposit includes, but is not limited to, certificate of deposit. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of time deposit maturing in next fiscal year following current fiscal year. Time deposit includes, but is not limited to, certificate of deposit. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of time deposit maturing in third fiscal year following current fiscal year. Time deposit includes, but is not limited to, certificate of deposit. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of time deposit maturing in second fiscal year following current fiscal year. Time deposit includes, but is not limited to, certificate of deposit. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of time deposit liabilities, including certificates of deposit.

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