Selected Consolidated Financial Statements of Parent, Guarantors, Canada Company and Non-Guarantors (Details 3) (USD $) In Thousands, unless otherwise specified	0 Months Ended				3 Months Ended
	Jan. 15, 2014	Oct. 15, 2013	Jul. 15, 2013	Apr. 15, 2013	Mar. 31, 2014	Mar. 31, 2013
Cash Flows from Operating Activities:
Cash Flows from Operating Activities-Continuing Operations					$ 55,641	$ 105,735
Cash Flows from Operating Activities-Discontinued Operations						870
Cash Flows from Operating Activities					55,641	106,605
Cash Flows from Investing Activities:
Capital expenditures					(107,856)	(95,418)
Cash paid for acquisitions, net of cash acquired					(30,781)	74
Investment in restricted cash						(1)
Additions to customer relationship and acquisition costs					(8,158)	(4,636)
Proceeds from sales of property and equipment and other, net					17,892	(517)
Cash Flows from Investing Activities-Continuing Operations					(128,903)	(100,498)
Cash Flows from Investing Activities-Discontinued Operations						(10)
Cash Flows from Investing Activities					(128,903)	(100,508)
Cash Flows from Financing Activities:
Repayment of revolving credit and term loan facilities and other debt					(2,454,691)	(355,367)
Proceeds from revolving credit and term loan facilities and other debt					2,876,047	386,506
Early retirement of senior subordinated notes					(247,275)
Debt financing (repayment to) and equity contribution from (distribution to) noncontrolling interests, net					(2,317)	194
Parent cash dividends	(51,683)	(51,625)	(51,597)	(51,460)	(52,735)	(51,662)
Proceeds from exercise of stock options and employee stock purchase plan					2,417	5,005
Excess tax benefits (deficiency) from stock-based compensation					(185)	1,705
Payment of debt financing costs					(422)	(469)
Cash Flows from Financing Activities-Continuing Operations					120,839	(14,088)
Cash Flows from Financing Activities					120,839	(14,088)
Effect of exchange rates on cash and cash equivalents					1,803	(5,425)
(Decrease) Increase in Cash and Cash Equivalents					49,380	(13,416)
Cash and Cash Equivalents, Beginning of Period					120,526	243,415
Cash and Cash Equivalents, End of Period					169,906	229,999
Eliminations
Cash Flows from Investing Activities:
Intercompany loans to subsidiaries					(439,097)	(93,542)
Investment in subsidiaries					23,390	7,000
Cash Flows from Investing Activities-Continuing Operations					(415,707)	(86,542)
Cash Flows from Investing Activities					(415,707)	(86,542)
Cash Flows from Financing Activities:
Intercompany loans from parent					439,097	93,542
Equity contribution from parent					(23,390)	(7,000)
Cash Flows from Financing Activities-Continuing Operations					415,707	86,542
Cash Flows from Financing Activities					415,707	86,542
Parent | Reportable legal entities
Cash Flows from Operating Activities:
Cash Flows from Operating Activities-Continuing Operations					(68,972)	(47,266)
Cash Flows from Operating Activities					(68,972)	(47,266)
Cash Flows from Investing Activities:
Intercompany loans to subsidiaries					377,202	95,719
Investment in subsidiaries					(11,695)	(3,500)
Investment in restricted cash						(1)
Cash Flows from Investing Activities-Continuing Operations					365,507	92,218
Cash Flows from Investing Activities					365,507	92,218
Cash Flows from Financing Activities:
Early retirement of senior subordinated notes					(247,275)
Parent cash dividends					(52,735)	(51,662)
Proceeds from exercise of stock options and employee stock purchase plan					2,417	5,005
Excess tax benefits (deficiency) from stock-based compensation					(185)	1,705
Cash Flows from Financing Activities-Continuing Operations					(297,778)	(44,952)
Cash Flows from Financing Activities					(297,778)	(44,952)
(Decrease) Increase in Cash and Cash Equivalents					(1,243)
Cash and Cash Equivalents, Beginning of Period					1,243
Guarantors | Reportable legal entities
Cash Flows from Operating Activities:
Cash Flows from Operating Activities-Continuing Operations					79,555	118,974
Cash Flows from Operating Activities-Discontinued Operations						(90)
Cash Flows from Operating Activities					79,555	118,884
Cash Flows from Investing Activities:
Capital expenditures					(71,520)	(61,795)
Cash paid for acquisitions, net of cash acquired					916	74
Intercompany loans to subsidiaries					61,895	(2,177)
Investment in subsidiaries					(11,695)	(3,500)
Additions to customer relationship and acquisition costs					(7,341)	(3,055)
Proceeds from sales of property and equipment and other, net					1,441	12
Cash Flows from Investing Activities-Continuing Operations					(26,304)	(70,441)
Cash Flows from Investing Activities-Discontinued Operations						(10)
Cash Flows from Investing Activities					(26,304)	(70,451)
Cash Flows from Financing Activities:
Repayment of revolving credit and term loan facilities and other debt					(2,171,941)	(349,550)
Proceeds from revolving credit and term loan facilities and other debt					2,480,901	386,300
Intercompany loans from parent					(376,788)	(97,554)
Equity contribution from parent					11,695	3,500
Payment of debt financing costs						(469)
Cash Flows from Financing Activities-Continuing Operations					(56,133)	(57,773)
Cash Flows from Financing Activities					(56,133)	(57,773)
(Decrease) Increase in Cash and Cash Equivalents					(2,882)	(9,340)
Cash and Cash Equivalents, Beginning of Period					10,366	13,472
Cash and Cash Equivalents, End of Period					7,484	4,132
Canada Company | Reportable legal entities
Cash Flows from Operating Activities:
Cash Flows from Operating Activities-Continuing Operations					10,421	2,129
Cash Flows from Operating Activities					10,421	2,129
Cash Flows from Investing Activities:
Capital expenditures					(2,865)	(741)
Additions to customer relationship and acquisition costs					(280)	(70)
Proceeds from sales of property and equipment and other, net					64	(3,191)
Cash Flows from Investing Activities-Continuing Operations					(3,081)	(4,002)
Cash Flows from Investing Activities					(3,081)	(4,002)
Cash Flows from Financing Activities:
Repayment of revolving credit and term loan facilities and other debt					(252,107)	(15)
Proceeds from revolving credit and term loan facilities and other debt					242,480
Intercompany loans from parent					8,640	(2,224)
Payment of debt financing costs					(12)
Cash Flows from Financing Activities-Continuing Operations					(999)	(2,239)
Cash Flows from Financing Activities					(999)	(2,239)
Effect of exchange rates on cash and cash equivalents					136	(2,269)
(Decrease) Increase in Cash and Cash Equivalents					6,477	(6,381)
Cash and Cash Equivalents, Beginning of Period					1,094	103,346
Cash and Cash Equivalents, End of Period					7,571	96,965
Non-Guarantors | Reportable legal entities
Cash Flows from Operating Activities:
Cash Flows from Operating Activities-Continuing Operations					34,637	31,898
Cash Flows from Operating Activities-Discontinued Operations						960
Cash Flows from Operating Activities					34,637	32,858
Cash Flows from Investing Activities:
Capital expenditures					(33,471)	(32,882)
Cash paid for acquisitions, net of cash acquired					(31,697)
Additions to customer relationship and acquisition costs					(537)	(1,511)
Proceeds from sales of property and equipment and other, net					16,387	2,662
Cash Flows from Investing Activities-Continuing Operations					(49,318)	(31,731)
Cash Flows from Investing Activities					(49,318)	(31,731)
Cash Flows from Financing Activities:
Repayment of revolving credit and term loan facilities and other debt					(30,643)	(5,802)
Proceeds from revolving credit and term loan facilities and other debt					152,666	206
Debt financing (repayment to) and equity contribution from (distribution to) noncontrolling interests, net					(2,317)	194
Intercompany loans from parent					(70,949)	6,236
Equity contribution from parent					11,695	3,500
Payment of debt financing costs					(410)
Cash Flows from Financing Activities-Continuing Operations					60,042	4,334
Cash Flows from Financing Activities					60,042	4,334
Effect of exchange rates on cash and cash equivalents					1,667	(3,156)
(Decrease) Increase in Cash and Cash Equivalents					47,028	2,305
Cash and Cash Equivalents, Beginning of Period					107,823	126,597
Cash and Cash Equivalents, End of Period					$ 154,851	$ 128,902