Derivative Instruments - Derivatives by Income Statement Location and Comprehensive Income (Details) (Cash flow hedging, USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 28, 2013	Jun. 29, 2012	Jun. 28, 2013	Jun. 29, 2012
Designated as hedging instrument
Derivative instruments
(Gain) loss recognized in comprehensive income	$ 3,797	$ 383	$ 12,740	$ 34,101
(Gain) loss reclassified from AOCI	5,990	7,396	20,206	66,913
Designated as hedging instrument | Interest rate swap agreements
Derivative instruments
(Gain) loss recognized in comprehensive income	5,297	(576)	11,595	28,725
Designated as hedging instrument | Interest rate swap agreements | Interest expense
Derivative instruments
(Gain) loss reclassified from AOCI	5,740	5,508	16,950	60,966
Designated as hedging instrument | Cross currency swap agreements
Derivative instruments
(Gain) loss recognized in comprehensive income	(1,500)	858	1,145	5,336
Designated as hedging instrument | Cross currency swap agreements | Interest expense
Derivative instruments
(Gain) loss reclassified from AOCI	250	1,741	3,256	5,671
Designated as hedging instrument | Natural gas hedge agreements
Derivative instruments
(Gain) loss recognized in comprehensive income	0	101	0	40
Designated as hedging instrument | Natural gas hedge agreements | Cost of services provided
Derivative instruments
(Gain) loss reclassified from AOCI	0	147	0	276
Not designated as hedging instrument
Derivative instruments
(Gain) loss reclassified recognized in income	(415)	(1,467)	(5,567)	(730)
Not designated as hedging instrument | Cross currency swap agreements | Interest expense
Derivative instruments
(Gain) loss reclassified recognized in income	(2,429)	0	(1,408)	0
Not designated as hedging instrument | Gasoline and diesel fuel agreements | Cost of services provided
Derivative instruments
(Gain) loss reclassified recognized in income	250	2,419	119	1,416
Not designated as hedging instrument | Foreign exchange forward | Interest expense
Derivative instruments
(Gain) loss reclassified recognized in income	$ 1,764	$ (3,886)	$ (4,278)	$ (2,146)