Reportable Segments (Details) (USD $)	3 Months Ended								12 Months Ended
	Sep. 29, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 30, 2012	Sep. 30, 2012	Jul. 01, 2012	Apr. 01, 2012	Jan. 01, 2012	Sep. 29, 2013	Sep. 30, 2012	Oct. 02, 2011
Financial information concerning reportable segments
Revenue	$ 698,376,000	$ 614,835,000	$ 641,999,000	$ 658,545,000	$ 719,405,000	$ 684,698,000	$ 624,345,000	$ 682,627,000	$ 2,613,755,000	$ 2,711,075,000	$ 2,573,144,000
Operating income	40,626,000	(99,884,000)	37,667,000	41,809,000	48,470,000	46,261,000	35,543,000	36,093,000	20,218,000	166,367,000	146,422,000
Depreciation									29,548,000	26,651,000	27,137,000
Goodwill impairment charge		56,600,000							56,600,000	914,000
Amortization expense for intangible assets									32,400,000	29,600,000	28,000,000
Fair value adjustments to contingent consideration liabilities	81,800,000								81,800,000
Total assets	1,799,092,000				1,671,030,000				1,799,092,000	1,671,030,000
ECS
Financial information concerning reportable segments
Revenue									1,035,983,000	1,155,256,000	1,110,060,000
Operating income									44,598,000	96,220,000	99,868,000
Depreciation									10,494,000	10,126,000	12,067,000
Goodwill impairment charge									56,600,000	914,000
Total assets	912,996,000				915,571,000				912,996,000	915,571,000
TSS
Financial information concerning reportable segments
Revenue									932,375,000	1,020,779,000	995,249,000
Operating income									71,842,000	71,767,000	69,977,000
Depreciation									2,839,000	3,227,000	2,028,000
Total assets	673,864,000				638,405,000				673,864,000	638,405,000
RCM
Financial information concerning reportable segments
Revenue									725,689,000	621,957,000	604,651,000
Operating income									(6,706,000)	22,374,000	13,183,000
Depreciation									13,160,000	10,233,000	10,101,000
Total assets	435,053,000				311,051,000				435,053,000	311,051,000
Inter-segment Elimination
Financial information concerning reportable segments
Revenue									(80,292,000)	(86,917,000)	(136,816,000)
Corporate
Financial information concerning reportable segments
Operating income									(89,516,000)	(23,994,000)	(36,606,000)
Depreciation									3,055,000	3,065,000	2,941,000
Goodwill impairment charge									56,600,000
Amortization expense for intangible assets									32,400,000	29,600,000	28,000,000
Fair value adjustments to contingent consideration liabilities	9,600,000				19,200,000				9,600,000	19,200,000	1,800,000
Corporate
Financial information concerning reportable segments
Total assets	$ (222,821,000)				$ (193,997,000)				$ (222,821,000)	$ (193,997,000)