Other Assets and Liabilites - Schedule of Right of Use Assets and Future Maturities of Lease Liabilities (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Right of Use Assets
Right-of-Use Asset, Operating Leases	$ 1,042		$ 1,042		$ 1,015
Operating Lease Liabilities, Payments Due
Total lease liabilities	$ 1,303		$ 1,303		$ 1,301
Weighted Average Remaining Lease Term, Operating Leases	6 years 8 months 12 days		6 years 8 months 12 days		6 years 8 months 12 days
Weighted Average Discount Rate, Percent, Operating Leases	3.60%		3.60%		3.50%
Operating Lease, Cost	$ 69	$ 66	$ 137	$ 143
Finance Lease Liabilities, Payments, Due
Right-of-Use Asset, Finance Leases	17		17		$ 17
Total lease liabilities	$ 19		$ 19		$ 19
Weighted Average Remaining Lease Term, Finance Leases	7 years 8 months 12 days		7 years 8 months 12 days		7 years 9 months 18 days
Weighted Average Discount Rate, Percent, Finance Leases	5.10%		5.10%		5.10%