Other Assets and Liabilites - Schedule of Right of Use Assets and Future Maturities of Lease Liabilities (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Right of Use Assets
Right-of-Use Asset, Operating Leases	$ 1,193	$ 1,168
Right-of-Use Asset, Finance Leases	$ 20	$ 22
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other assets (including $1,582 and $3,436 at fair value, respectively)	Other assets (including $1,582 and $3,436 at fair value, respectively)
Operating Lease Liabilities, Payments Due
2023	$ 311
2024	304
2025	269
2026	218
2027	183
Thereafter	433
Total lease payments, Operating Leases	1,718	1,715
Less: imputed interest, Operating Leases	173	115
Total lease liabilities	$ 1,545	$ 1,600
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Other Liabilities	Other Liabilities
Weighted Average Remaining Lease Term, Operating Leases	6 years 7 months 6 days	6 years 7 months 6 days
Weighted Average Discount Rate, Percent, Operating Leases	2.70%	2.30%
Operating Lease, Cost	$ 328	$ 319	$ 360
Finance Lease Liabilities, Payments, Due
2023	4
2024	5
2025	5
2026	4
2027	3
Thereafter	4
Total lease payments, Finance Leases	25	29
Less: imputed interest, Finance Leases	2	3
Total lease liabilities	$ 23	$ 26
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Other Liabilities	Other Liabilities
Weighted Average Remaining Lease Term, Finance Leases	5 years 7 months 6 days	6 years 4 months 24 days
Weighted Average Discount Rate, Percent, Finance Leases	3.40%	3.50%