Guarantor Financial Information (Condensed Consolidated Statements of Cash Flows) (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended				6 Months Ended
	Jan. 31, 2020	Jun. 27, 2020	Mar. 28, 2020	Jun. 29, 2019	Mar. 30, 2019	Jun. 27, 2020	Jun. 29, 2019
Cash flows from operating activities:
Net income		$ 66,495	$ 86,091	$ 31,044	$ 19,640	$ 152,586	$ 50,684
Earnings in investments in subsidiaries		0		0		0	0
Other operating cash flows						111,063	103,620
Net cash provided by operating activities						263,649	154,304
Cash flows from investing activities:
Capital expenditures						(123,204)	(167,871)
Acquisitions	$ (12,200)					0	(1,431)
Investment in subsidiaries and affiliates						0	(1,000)
Gross proceeds from disposal of property, plant and equipment and other assets						1,053	9,814
Proceeds from insurance settlement						0	845
Payments related to routes and other intangibles						(3,712)	(3,150)
Net cash used by investing activities						(125,863)	(162,793)
Cash flows from financing activities:
Proceeds from long-term debt						16,164	507,722
Payments on long-term debt						(18,239)	(526,230)
Borrowings from revolving credit facility						375,971	273,485
Payments on revolving credit facility						(405,800)	(266,884)
Net cash overdraft financing						(26,461)	11,178
Payments of Debt Issuance Costs						0	(7,003)
Issuance of common stock						67	12
Repurchase of common stock		0	(55,000)			(55,044)	0
Contributions from parent						0	0
Minimum withholding taxes paid on stock awards						(4,863)	(3,193)
Acquisition of noncontrolling interest						(8,784)
Distributions to noncontrolling interests						(987)	0
Net cash used by financing activities						(127,976)	(10,913)
Effect of exchange rate changes on cash						(6,567)	(853)
Net increase (decrease) in cash, cash equivalents and restricted cash						3,243	(20,255)
Cash, cash equivalents and restricted cash at beginning of period			73,045		107,369	73,045	107,369
Cash, cash equivalents and restricted cash at end of period		76,288		87,114		76,288	87,114
Parent [Member]
Cash flows from operating activities:
Net income		66,495		31,044		152,586	50,684
Earnings in investments in subsidiaries		(88,848)		(68,680)		(210,787)	(123,307)
Other operating cash flows						198,633	116,433
Net cash provided by operating activities						140,432	43,810
Cash flows from investing activities:
Capital expenditures						(28,661)	(63,517)
Acquisitions							(1,157)
Investment in subsidiaries and affiliates						(17,534)	(1,393)
Gross proceeds from disposal of property, plant and equipment and other assets						30	250
Proceeds from insurance settlement							0
Payments related to routes and other intangibles						(3,416)	(131)
Net cash used by investing activities						(49,581)	(65,948)
Cash flows from financing activities:
Proceeds from long-term debt						0	500,000
Payments on long-term debt						(2)	(507,622)
Borrowings from revolving credit facility						233,000	134,000
Payments on revolving credit facility						(262,000)	(96,000)
Net cash overdraft financing						(1,604)	4,510
Payments of Debt Issuance Costs							(7,003)
Issuance of common stock						67	12
Repurchase of common stock						(55,044)
Contributions from parent						0	0
Minimum withholding taxes paid on stock awards						(4,851)	(3,192)
Acquisition of noncontrolling interest						0
Distributions to noncontrolling interests						0
Net cash used by financing activities						(90,434)	24,705
Effect of exchange rate changes on cash						0	0
Net increase (decrease) in cash, cash equivalents and restricted cash						417	2,567
Cash, cash equivalents and restricted cash at beginning of period			654		1,098	654	1,098
Cash, cash equivalents and restricted cash at end of period		1,071		3,665		1,071	3,665
Guarantors [Member]
Cash flows from operating activities:
Net income		21,063		16,819		41,175	35,340
Earnings in investments in subsidiaries		0		0		0	0
Other operating cash flows						(7,774)	884
Net cash provided by operating activities						33,401	36,224
Cash flows from investing activities:
Capital expenditures						(33,673)	(44,720)
Acquisitions							0
Investment in subsidiaries and affiliates						0	(393)
Gross proceeds from disposal of property, plant and equipment and other assets						275	7,654
Proceeds from insurance settlement							845
Payments related to routes and other intangibles						0	0
Net cash used by investing activities						(33,398)	(36,614)
Cash flows from financing activities:
Proceeds from long-term debt						0	0
Payments on long-term debt						(4)	(3)
Borrowings from revolving credit facility						0	0
Payments on revolving credit facility						0	0
Net cash overdraft financing						0	0
Payments of Debt Issuance Costs							0
Issuance of common stock						0	0
Repurchase of common stock						0
Contributions from parent						0	393
Minimum withholding taxes paid on stock awards						0	0
Acquisition of noncontrolling interest						0
Distributions to noncontrolling interests						0
Net cash used by financing activities						(4)	390
Effect of exchange rate changes on cash						0	0
Net increase (decrease) in cash, cash equivalents and restricted cash						(1)	0
Cash, cash equivalents and restricted cash at beginning of period			26		32	26	32
Cash, cash equivalents and restricted cash at end of period		25		32		25	32
Non-guarantors [Member]
Cash flows from operating activities:
Net income		67,785		51,861		169,612	87,967
Earnings in investments in subsidiaries		0		0		0	0
Other operating cash flows						(79,796)	(13,697)
Net cash provided by operating activities						89,816	74,270
Cash flows from investing activities:
Capital expenditures						(60,870)	(59,634)
Acquisitions							(274)
Investment in subsidiaries and affiliates						0	0
Gross proceeds from disposal of property, plant and equipment and other assets						748	1,910
Proceeds from insurance settlement							0
Payments related to routes and other intangibles						(296)	(3,019)
Net cash used by investing activities						(60,418)	(61,017)
Cash flows from financing activities:
Proceeds from long-term debt						16,164	7,722
Payments on long-term debt						(18,233)	(18,605)
Borrowings from revolving credit facility						142,971	139,485
Payments on revolving credit facility						(143,800)	(170,884)
Net cash overdraft financing						(24,857)	6,668
Payments of Debt Issuance Costs							0
Issuance of common stock						0	0
Repurchase of common stock						0
Contributions from parent						17,534	393
Minimum withholding taxes paid on stock awards						(12)	(1)
Acquisition of noncontrolling interest						(8,784)
Distributions to noncontrolling interests						(987)
Net cash used by financing activities						(20,004)	(35,222)
Effect of exchange rate changes on cash						(6,567)	(853)
Net increase (decrease) in cash, cash equivalents and restricted cash						2,827	(22,822)
Cash, cash equivalents and restricted cash at beginning of period			72,365		106,239	72,365	106,239
Cash, cash equivalents and restricted cash at end of period		75,192		83,417		75,192	83,417
Eliminations [Member]
Cash flows from operating activities:
Net income		(88,848)		(68,680)		(210,787)	(123,307)
Earnings in investments in subsidiaries		88,848		68,680		210,787	123,307
Other operating cash flows						0	0
Net cash provided by operating activities						0	0
Cash flows from investing activities:
Capital expenditures						0	0
Acquisitions							0
Investment in subsidiaries and affiliates						17,534	786
Gross proceeds from disposal of property, plant and equipment and other assets						0	0
Proceeds from insurance settlement							0
Payments related to routes and other intangibles						0	0
Net cash used by investing activities						17,534	786
Cash flows from financing activities:
Proceeds from long-term debt						0	0
Payments on long-term debt						0	0
Borrowings from revolving credit facility						0	0
Payments on revolving credit facility						0	0
Net cash overdraft financing						0	0
Payments of Debt Issuance Costs							0
Issuance of common stock						0	0
Repurchase of common stock						0
Contributions from parent						(17,534)	(786)
Minimum withholding taxes paid on stock awards						0	0
Acquisition of noncontrolling interest						0
Distributions to noncontrolling interests						0
Net cash used by financing activities						(17,534)	(786)
Effect of exchange rate changes on cash						0	0
Net increase (decrease) in cash, cash equivalents and restricted cash						0	0
Cash, cash equivalents and restricted cash at beginning of period			$ 0		$ 0	0	0
Cash, cash equivalents and restricted cash at end of period		$ 0		$ 0		$ 0	$ 0