Condensed Financial Information of Parent Company - Condensed Balance Sheet (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Assets:
Cash and cash equivalents	$ 2,131	$ 1,665
Other investments	150	220
Other assets	902	977
Total assets	28,931	73,710
Liabilities and Equity:
Long-term debt	1,964	1,963
Other liabilities	1,700	1,584
Shareholders’ equity	5,012	6,789
Total liabilities and shareholders’ equity	28,931	73,710
AFG
Assets:
Cash and cash equivalents	589	215	$ 166	$ 158
Investment in securities	1,281	80
Investment in subsidiaries	5,334	8,525
Other investments	2	2
Other assets	103	213
Total assets	7,309	9,035
Liabilities and Equity:
Long-term debt	1,964	1,963
Other liabilities	333	283
Shareholders’ equity	5,012	6,789
Total liabilities and shareholders’ equity	$ 7,309	$ 9,035