CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common stock	Paid-in capital	Treasury stock	Accumulated other comprehensive income (loss)	Retained earnings
Balance, beginning of year at Dec. 31, 2021		$ 371,353	$ 1,794,906	$ (675,265)	$ 119,697	$ 3,250,691
Increase (Decrease) in Stockholders' Equity [Roll Forward]
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	(340,600)			(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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Retirement of treasury stock		(119,053)		1,847,265		(1,728,212)
Purchases of common stock	(566,600)	(3,851)				(93,013)
Reissuance of treasury stock, net under share-based compensation plans			(31,201)	12,135
Equity compensation			31,324
Purchases of common stock				(475,107)
Other comprehensive income (loss)	28,119				28,119
Net income	762,994					762,994
Cash dividends						(131,042)
Balance, end of year at Dec. 31, 2024	$ 5,172,375	$ 248,449	$ 1,808,236	$ 0	$ (288,162)	$ 3,403,852