Summary of Significant Accounting Policies Summary of Significant Accounting Policies, Cash Flow (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net cash provided by operating activities	$ 920,608	$ 804,351	$ 628,755
Capital expenditures	(303,660)	(222,211)	(239,957)
Proceeds from divestitures and sales of property and equipment	40,696	21,916	77,074
Payment to Acquire Life Insurance Policy, Investing Activities	(3,982)	(5,352)	(9,026)
Proceeds from Life Insurance Policy	0	3,519	415
Net Cash Provided by (Used in) Investing Activities	(414,932)	(318,371)	(278,511)
Proceeds from issuance of long-term debt	975,000	1,585,000	1,149,263
Debt issuance costs	(13,640)	(14,503)	(15,539)
Scheduled payments of debt	(36,158)	(34,489)	(25,471)
Proceeds from exercise of stock options	39,354	26,671	40,922
Purchase of Company common stock	(554,313)	(516,870)	(129,589)
Payments of dividends	(146,919)	(137,392)	(131,402)
Bank overdrafts and other	5,510	14,259	328
Net Cash Provided by (Used in) Financing Activities	(465,620)	(492,778)	(319,093)
Effect of foreign currency	(111)	2,788	3,885
Net (decrease) increase in cash, cash equivalents, and restricted cash	39,945	(4,010)	35,036
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 278,555	$ 238,610	$ 242,620	$ 207,584