Impairment, Disposition Of Property And Equipment, Restaurant Closing Costs And Restructuring Restructuring Costs (Details) - USD ($) $ in Thousands		12 Months Ended
		Oct. 02, 2016		Sep. 27, 2015	Sep. 28, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring Costs		$ 10,067		$ 29	$ 8,621
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Costs		7,583		29	2,141
Restructuring Reserve [Roll Forward]
Balance at beginning of year		0
Additions and adjustments		7,583
Cash payments		(3,385)
Balance at end of year		4,198		0
Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Costs		2,004		0	0
Restructuring Reserve [Roll Forward]
Balance at beginning of year		9,707
Additions and adjustments		464
Cash payments		(5,328)
Balance at end of year		7,231	[1]	9,707
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	[2]	480		$ 0	$ 6,480
Shared Services [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Costs		1,800
Qdoba brand restaurant operations [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Costs		6,300
Jack in the box brand restaurant operations [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Costs		$ 2,000

[1] The weighted average remaining lease term related to these commitments is approximately five years

[2] (1)Other primarily represents employee relocation costs in 2016, and in 2014, an impairment charge related to a restaurant software asset we no longer planned to place in service.