Condensed Financial Information (Parent Company) (Condensed Balance Sheet - Insets) (Details) - USD ($) $ / shares in Units, $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Condensed Balance Sheet Statements, Captions [Line Items]
Amortized cost of fixed maturity securities	$ 310,884	$ 310,811
Preferred stock, par value	$ 0.01	$ 0.01
Preferred Stock, Liquidation Preference, Value	$ 3,905	$ 4,405
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	3,000,000,000	3,000,000,000
Common stock, shares issued	1,186,540,473	1,181,614,288
Common stock, shares outstanding	825,540,267	892,910,600
Treasury stock, shares	361,000,206	288,703,688
Parent Company
Condensed Balance Sheet Statements, Captions [Line Items]
Amortized cost of fixed maturity securities	$ 2,742	$ 3,400
Preferred stock, par value	$ 0.01	$ 0.01
Preferred Stock, Liquidation Preference, Value	$ 3,905	$ 4,405
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	3,000,000,000	3,000,000,000
Common stock, shares issued	1,186,540,473	1,181,614,288
Common stock, shares outstanding	825,540,267	892,910,600
Treasury stock, shares	361,000,206	288,703,688