Impairments and Exit Costs (Restaurant closure initiatives-Summary) (Details) - USD ($) $ in Thousands		3 Months Ended			6 Months Ended
		Jul. 01, 2018	Jun. 25, 2017		Jul. 01, 2018		Jun. 25, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Restructuring charges		$ 1,570	$ 702		$ 1,717		$ 16,199
International segment [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Restructuring charges		6,900			9,200
Facility closing [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Restructuring charges					8,071
Closure Initiatives [Member] | Facility closing [Member] | Provision for impaired assets and restaurant closings [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Restructuring charges	[1]	1,607			1,632
Closure Initiatives [Member] | Facility closing [Member] | Provision for impaired assets and restaurant closings [Member] | U.S. segment [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Restructuring charges		0	(244)	[1]	0		18,012	[1]
Closure Initiatives [Member] | Facility closing [Member] | Provision for impaired assets and restaurant closings [Member] | International segment [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Restructuring charges		0			1,000	[1]
Closure Initiatives [Member] | Employee severance [Member] | General and administrative expense [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Restructuring charges		110	766		232		2,948
Closure Initiatives [Member] | Contract termination [Member] | Other restaurant operating [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Restructuring, reversal of deferred rent liabilities		$ (147)	$ 180		$ (147)		$ (4,761)

[1] The Company recognized asset impairment and closure charges of $1.0 million within the International segment related to the Closure Initiatives during the thirteen and twenty-six weeks ended July 1, 2018. All other asset impairment and closure charges for the periods presented were recognized within the U.S. segment.