CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common stock	Paid-in capital	Paid-in capital Cumulative Effect, Period of Adoption, Adjustment	Paid-in capital Cumulative Effect, Period of Adoption, Adjusted Balance	Treasury stock	Accumulated other comprehensive income (loss)	Retained earnings	Retained earnings Cumulative Effect, Period of Adoption, Adjustment	Retained earnings Cumulative Effect, Period of Adoption, Adjusted Balance
Balance, beginning of year at Dec. 31, 2020		$ 371,353	$ 1,862,042	$ (68,289)	$ 1,793,753	$ (393,326)	$ 216,821	$ 2,642,096	$ 68,289	$ 2,710,385
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reissuance of treasury stock, net under share-based compensation plans			(15,956)			8,879
Equity compensation			17,109
Purchases of common stock						(290,818)
Other comprehensive income (loss)	$ (97,124)						(97,124)
Net income	634,983							634,983
Cash dividends								(94,677)
Balance, end of year at Dec. 31, 2021	$ 4,861,382	371,353	1,794,906			(675,265)	119,697	3,250,691
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible Enumeration]	Accounting Standards Update 2020-06 [Member]
Reissuance of treasury stock, net under share-based compensation plans			(20,835)			10,741
Equity compensation			24,771
Purchases of common stock						(385,714)
Other comprehensive income (loss)	$ (601,208)						(601,208)
Net income	865,349							865,349
Cash dividends								(111,746)
Balance, end of year at Dec. 31, 2022	4,642,740	371,353	1,798,842			(1,050,238)	(481,511)	4,004,294
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of 9% Debentures, net of tax			(5,315)
Reissuance of treasury stock, net under share-based compensation plans			(17,021)			9,764
Equity compensation			31,607
Purchases of common stock						(343,819)
Other comprehensive income (loss)	165,230						165,230
Net income	712,949							712,949
Cash dividends								(124,118)
Balance, end of year at Dec. 31, 2023	$ 5,072,017	$ 371,353	$ 1,808,113			$ (1,384,293)	$ (316,281)	$ 4,593,125