Condensed Financial Information of Parent Company - Condensed Balance Sheet (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Assets:
Cash and cash equivalents	$ 872	$ 2,131
Real estate and other investments	127	150
Other assets	1,219	902
Total assets	28,831	28,931
Liabilities and Equity:
Long-term debt	1,496	1,964
Other liabilities	1,696	1,700
Shareholders’ equity	4,052	5,012
Total liabilities and shareholders’ equity	28,831	28,931
AFG
Assets:
Cash and cash equivalents	225	589	$ 215	$ 166
Investment in securities	591	1,281
Investment in subsidiaries	4,825	5,334
Real estate and other investments	63	2
Other assets	132	103
Total assets	5,836	7,309
Liabilities and Equity:
Long-term debt	1,496	1,964
Other liabilities	288	333
Shareholders’ equity	4,052	5,012
Total liabilities and shareholders’ equity	$ 5,836	$ 7,309