Asset Securitizations (Details) - USD ($)	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022	Dec. 31, 2021
Assets from Trusts [Line Items]
Restricted balances included in Cash and cash equivalents	$ 1,231,000,000	$ 544,000,000	$ 1,086,000,000	$ 525,000,000
American Express Lending Trust
Assets from Trusts [Line Items]
Direct and Indirect ownership of variable interests	14,800,000,000	16,000,000,000
Restricted balances included in Cash and cash equivalents	668,000,000	59,000,000
American Express Charge Trust
Assets from Trusts [Line Items]
Direct and Indirect ownership of variable interests	3,100,000,000	5,200,000,000
Restricted balances included in Cash and cash equivalents	$ 0	$ 0