Other Assets (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Other Assets [Line Items]
Accumulated goodwill impairment losses	$ 221	$ 221
Gross carrying amount	642	717
Accumulated amortization	519	619
Amortization expense	46	49	$ 51
Expected amortization expense in 2025	35
Expected amortization expense in 2026	25
Expected amortization expense in 2027	23
Expected amortization expense in 2028	18
Expected amortization expense in 2029	15
Expected amortization expense thereafter	7
Tax credit investments	$ 1,568	$ 1,369
Investment, Proportional Amortization Method, Elected, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Tax credit investments unfunded commitment	$ 682
Investment Program, Proportional Amortization Method, Elected, Income Tax Credit and Other Income Tax Benefit, before Amortization, Statement of Cash Flows [Extensible Enumeration]	Accounts payable & other liabilities	Accounts payable & other liabilities	Accounts payable & other liabilities
Investment Program, Proportional Amortization Method, Applied, Amortization Expense, Statement of Cash Flows [Extensible Enumeration]	Accounts payable & other liabilities	Accounts payable & other liabilities	Accounts payable & other liabilities
Earliest Year
Other Assets [Line Items]
Tax credit investments commitment, year to be paid	2025
Latest Year
Other Assets [Line Items]
Tax credit investments commitment, year to be paid	2040
Variable Interest Entity, Primary Beneficiary
Other Assets [Line Items]
Tax credit investments	$ 1,168	$ 1,126
Investment, Proportional Amortization Method, Elected, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Tax credit investments unfunded commitment	$ 401
Variable Interest Entity, Primary Beneficiary | Off-Balance Sheet Obligations
Other Assets [Line Items]
Tax credit investments off balance sheet obligation	$ 4
Minimum
Other Assets [Line Items]
Estimated useful lives	1 year
Maximum
Other Assets [Line Items]
Estimated useful lives	22 years