Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Earnings Per Share
Antidilutive common share equivalents excluded from computation of earnings per share amount (in shares)	0	0	0	0
Net Income (Numerator)
Basic earnings per share (in dollars)	$ 317,802	$ 577,195	$ 1,329,841	$ 2,026,612
Diluted earnings per share (in dollars)	$ 317,802	$ 577,195	$ 1,329,841	$ 2,026,612
Weighted Average Shares (Denominator)
Basic earnings per share (in shares)	154,061,000	165,170,000	156,528,000	168,259,000
Dilutive common share equivalents (in shares)	749,000	935,000	720,000	891,000
Diluted earnings per share (in shares)	154,810,000	166,105,000	157,248,000	169,150,000
Per Share Amount
Basic (in dollars per share)	$ 2.06	$ 3.49	$ 8.50	$ 12.04
Diluted (in dollars per share)	$ 2.05	$ 3.47	$ 8.46	$ 11.98