Segments - Total Assets (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Total assets	$ 144,048	$ 171,262
Noncontrolling Interest
Segment Reporting Information [Line Items]
Total assets	3,909	3,465
Total | Parent
Segment Reporting Information [Line Items]
Total assets	140,139	167,797
Operating Segments | Wealth Solutions
Segment Reporting Information [Line Items]
Total assets	110,324	137,544
Operating Segments | Investment Management
Segment Reporting Information [Line Items]
Total assets	1,532	1,226
Operating Segments | Health Solutions
Segment Reporting Information [Line Items]
Total assets	2,751	3,002
Corporate | Parent
Segment Reporting Information [Line Items]
Total assets	$ 25,532	$ 26,025