Segment Information - Schedule of Segment Reporting (Details) $ in Millions		3 Months Ended			6 Months Ended
		Dec. 26, 2018 USD ($) Location		Dec. 27, 2017 USD ($)	Dec. 26, 2018 USD ($) Location		Dec. 27, 2017 USD ($)	Sep. 26, 2018 Location	Jun. 27, 2018 USD ($)
Segment Reporting Information [Line Items]
Total revenues		$ 790.7		$ 766.4	$ 1,544.5		$ 1,505.8
Revenue from Contract with Customer, Excluding Assessed Tax		761.5			1,489.8
Company restaurant expenses	[1]	667.4		631.9	1,314.6		1,258.7
Depreciation and amortization		36.1		37.7	73.1		76.2
General and administrative		35.4		33.1	69.2		65.4
Other (gains) and charges		2.2		9.3	(8.9)	[2]	22.5
Total operating costs and expenses		741.1		712.0	1,448.0		1,422.8
Operating income (loss)		49.6		54.4	96.5		83.0
Interest expense		15.4		14.3	31.0		28.2
Other (income), net		(0.8)		(1.0)	(1.6)		(1.5)
Income (loss) before provision for income taxes		35.0		41.1	67.1		56.3
Segment assets		1,294.8	[2]		1,294.8	[2]			$ 1,347.3
Goodwill		163.7			163.7				$ 163.8
Payments for property and equipment					78.7		48.6
Sale leaseback gain, net of transaction charges		4.4		0.0	17.7		0.0
Chili's Restaurants [Member]
Segment Reporting Information [Line Items]
Total revenues		662.3		640.1	1,324.1		1,286.0
Revenue from Contract with Customer, Excluding Assessed Tax		640.6			1,280.9
Company restaurant expenses	[1]	567.1		533.9	1,130.2		1,075.3
Depreciation and amortization		29.5		31.0	60.0		62.8
General and administrative		9.1		9.3	17.9		18.9
Other (gains) and charges		1.4		5.9	(10.9)	[2]	18.0
Total operating costs and expenses		607.1		580.1	1,197.2		1,175.0
Operating income (loss)		55.2		60.0	126.9		111.0
Interest expense		0.7		0.0	1.7		0.0
Other (income), net		0.0		0.0	0.0		0.0
Income (loss) before provision for income taxes		54.5		60.0	125.2		111.0
Segment assets	[2]	1,047.8			1,047.8
Goodwill		$ 125.3			125.3
Payments for property and equipment					$ 58.8		40.8
Number of restaurant properties included in sale-leaseback | Location		145			145			141
Maggiano's Restaurants [Member]
Segment Reporting Information [Line Items]
Total revenues		$ 128.4		126.3	$ 220.4		219.8
Revenue from Contract with Customer, Excluding Assessed Tax		120.9			208.9
Company restaurant expenses	[1]	100.1		97.9	184.0		183.2
Depreciation and amortization		3.9		4.0	7.9		8.0
General and administrative		1.5		1.5	3.2		2.8
Other (gains) and charges		0.0		1.0	0.0	[2]	0.8
Total operating costs and expenses		105.5		104.4	195.1		194.8
Operating income (loss)		22.9		21.9	25.3		25.0
Interest expense		0.1		0.0	0.2		0.0
Other (income), net		0.0		0.0	0.0		0.0
Income (loss) before provision for income taxes		22.8		21.9	25.1		25.0
Segment assets	[2]	148.9			148.9
Goodwill		38.4			38.4
Payments for property and equipment					6.4		4.2
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Total revenues		0.0		0.0	0.0		0.0
Company restaurant expenses	[1]	0.2		0.1	0.4		0.2
Depreciation and amortization		2.7		2.7	5.2		5.4
General and administrative		24.8		22.3	48.1		43.7
Other (gains) and charges		0.8		2.4	2.0	[2]	3.7
Total operating costs and expenses		28.5		27.5	55.7		53.0
Operating income (loss)		(28.5)		(27.5)	(55.7)		(53.0)
Interest expense		14.6		14.3	29.1		28.2
Other (income), net		(0.8)		(1.0)	(1.6)		(1.5)
Income (loss) before provision for income taxes		(42.3)		(40.8)	(83.2)		(79.7)
Segment assets	[2]	98.1			98.1
Goodwill		0.0			0.0
Payments for property and equipment					13.5		3.6
Company sales [Member]
Segment Reporting Information [Line Items]
Total revenues				742.7			1,459.6
Revenue from Contract with Customer, Excluding Assessed Tax		761.5		742.7	1,489.8		1,459.6
Company sales [Member] | Chili's Restaurants [Member]
Segment Reporting Information [Line Items]
Total revenues				623.6			1,251.2
Revenue from Contract with Customer, Excluding Assessed Tax		640.6			1,280.9
Company sales [Member] | Maggiano's Restaurants [Member]
Segment Reporting Information [Line Items]
Total revenues				119.1			208.4
Revenue from Contract with Customer, Excluding Assessed Tax		120.9			208.9
Company sales [Member] | Corporate and Other [Member]
Segment Reporting Information [Line Items]
Total revenues				0.0			0.0
Revenue from Contract with Customer, Excluding Assessed Tax		0.0			0.0
Royalties [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		13.2			26.1
Royalties [Member] | Chili's Restaurants [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		13.2			26.1
Royalties [Member] | Maggiano's Restaurants [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0.0			0.0
Royalties [Member] | Corporate and Other [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0.0			0.0
Franchise and other revenues [Member]
Segment Reporting Information [Line Items]
Total revenues				23.7			46.2
Revenue from Contract with Customer, Excluding Assessed Tax		29.2		23.7	54.7		46.2
Franchise and other revenues [Member] | Chili's Restaurants [Member]
Segment Reporting Information [Line Items]
Total revenues				16.5			34.8
Franchise and other revenues [Member] | Maggiano's Restaurants [Member]
Segment Reporting Information [Line Items]
Total revenues				7.2			11.4
Franchise and other revenues [Member] | Corporate and Other [Member]
Segment Reporting Information [Line Items]
Total revenues				$ 0.0			$ 0.0
Franchise fees and other revenues [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		16.0			28.6
Franchise fees and other revenues [Member] | Chili's Restaurants [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		8.5			17.1
Franchise fees and other revenues [Member] | Maggiano's Restaurants [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		7.5			11.5
Franchise fees and other revenues [Member] | Corporate and Other [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0.0			0.0
Land, Buildings and Improvements [Member] | Chili's Restaurants [Member]
Segment Reporting Information [Line Items]
Sale Leaseback Transaction, Net Book Value		$ 170.9			$ 170.9

[1] Company restaurant expenses include Cost of sales, Restaurant labor, and Restaurant expenses including advertising expenses. With the adoption of ASC 606, for the thirteen and twenty-six week periods ended December 26, 2018, advertising contributions received from Chili’s franchisees are recorded as Franchise fees and other revenues within Total revenues, which differs from the thirteen and twenty-six week periods ended December 27, 2017 that includes Chili’s franchise advertising contributions recorded on a net basis within Company restaurant expenses.

[2] During the twenty-six week period ended December 26, 2018 we completed sale leaseback transactions of 145 company-owned Chili’s restaurant properties. As part of this transaction, we sold the related restaurant fixed assets totaling $170.9 million, net of accumulated depreciation. Additionally, Chili’s recognized $17.7 million of gain on the sale, including a certain portion of the deferred gain, net of related transaction costs incurred in Other (gains) and charges in the Consolidated Statements of Comprehensive Income. Please see Note 3 - Sale Leaseback Transactions for further details.