Income Taxes Components of current and deferred income tax expense (benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Current provision (benefit)
Federal	$ 622,205	$ 615,434	$ 430,686
State and other	120,424	100,223	73,671
Current Income Tax Expense (Benefit)	742,629	715,657	504,357
Deferred provision (benefit)
Federal	72,854	55,653	57,743
State and other	31,412	50,931	1,425
Deferred Income Tax Expense (Benefit)	104,266	106,584	59,168
Income tax expense (benefit)	$ 846,895	$ 822,241	$ 563,525