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Shareholders' Equity (Narrative) (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 04, 2022
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, additional authorized amount			$ 300,000
Common stock surrendered as payment	$ 345,921	$ 106,036
Value of common shares remaining to be repurchased	$ 280,766
Repurchases in Accordance with Stock Award Agreements [Member]
Equity, Class of Treasury Stock [Line Items]
Acquisition of treasury stock (shares), total	55
Common stock surrendered as payment	$ 85,811

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