Income Taxes Components of current and deferred income tax expense (benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current provision (benefit)
Federal	$ 430,686	$ 159,677	$ 196,186
State and other	73,671	24,580	21,252
Current Income Tax Expense (Benefit)	504,357	184,257	217,438
Deferred provision (benefit)
Federal	57,743	116,484	74,700
State and other	1,425	21,114	30,738
Deferred Income Tax Expense (Benefit)	59,168	137,598	105,438
Income tax expense (benefit)	$ 563,525	$ 321,855	$ 322,876