Asset Securitizations (Details) - USD ($)	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Assets from Trusts [Line Items]
Restricted balances included in Cash and cash equivalents	$ 549,000,000	$ 544,000,000	$ 2,207,000,000	$ 525,000,000
American Express Lending Trust
Assets from Trusts [Line Items]
Direct and Indirect ownership of variable interests	15,600,000,000	16,000,000,000
Restricted balances included in Cash and cash equivalents	57,000,000	59,000,000
American Express Charge Trust
Assets from Trusts [Line Items]
Direct and Indirect ownership of variable interests	5,300,000,000	5,200,000,000
Restricted balances included in Cash and cash equivalents	$ 0	$ 0