SEGMENT INFORMATION (Schedule of Segment Reporting Information, by Segment) (Details) $ in Millions		3 Months Ended									12 Months Ended
		Jun. 24, 2020 USD ($) Location restaurant Country		Mar. 25, 2020 USD ($)	Dec. 25, 2019 USD ($)	Sep. 25, 2019 USD ($)	Jun. 26, 2019 USD ($) Location Restaurant	Mar. 27, 2019 USD ($)	Dec. 26, 2018 USD ($)	Sep. 26, 2018 USD ($)	Jun. 24, 2020 USD ($) Location restaurant Country		Jun. 26, 2019 USD ($) Location Restaurant		Jun. 27, 2018 USD ($)	Sep. 05, 2019 Restaurant
Segment Reporting Information [Line Items]
Number of foreign countries operating in | Country		28									28
Number of territories | Location		2									2
Segment Information, disclosure of major customers											We do not rely on any major customers as a source of sales
Total revenues		$ 563.2		$ 860.0	$ 869.3	$ 786.0	$ 834.1	$ 839.3	$ 790.7	$ 753.8	$ 3,078.5		$ 3,217.9		$ 3,135.4
Company restaurant expenses(1)	[1]										2,669.9		2,695.0		2,587.4
Depreciation and amortization											162.3		147.6		151.4
General and administrative											136.3		149.1		136.0
Other (gains) and charges											47.4		(4.5)	[2]	34.5
Total operating costs and expenses											3,015.9		2,987.2		2,909.3
Operating income											62.6		230.7		226.1
Interest expenses											59.6		61.6		59.0
Other (income), net											(1.9)		(2.7)		(3.1)
Income (loss) before income taxes		(68.1)		$ 27.2	$ 29.0	$ 16.8	49.2	$ 55.5	$ 35.0	$ 32.1	4.9		171.8		170.2
Segment assets		$ 2,356.0	[3]				$ 1,258.3				2,356.0	[3]	1,258.3
Payments for property and equipment											$ 104.5		$ 167.6		101.3
Number of restaurants | restaurant		1,663									1,663
Number of properties sold and leased back under operating leases | Location							152						152
Gain from sale leaseback transaction													$ (35.2)
Chili's Restaurants [Member]
Segment Reporting Information [Line Items]
Number of foreign countries operating in | Country		28									28
Number of territories | Location		2									2
Total revenues											$ 2,731.7	[4]	2,782.2		2,700.2
Company restaurant expenses(1)	[1]										2,363.2	[4]	2,329.6		2,224.0
Depreciation and amortization											133.9	[4]	120.1		125.0
General and administrative											32.1	[4]	38.7		39.6
Other (gains) and charges											35.3	[4]	(6.4)	[2]	24.5
Total operating costs and expenses											2,564.5	[4]	2,482.0		2,413.1
Operating income											167.2	[4]	300.2		287.1
Interest expenses											4.6	[4]	3.2		0.0
Other (income), net											(0.6)	[4]	0.0		0.0
Income (loss) before income taxes											163.2	[4]	297.0		287.1
Segment assets		$ 1,967.3	[1],[4]				$ 1,002.8				1,967.3	[1],[4]	1,002.8
Payments for property and equipment											88.2	[4]	$ 129.1		85.3
Number of properties sold and leased back under operating leases | Location							151						151
Gain from sale leaseback transaction													$ (26.8)
Maggiano's Restaurants [Member]
Segment Reporting Information [Line Items]
Total revenues											346.8		435.7		435.2
Company restaurant expenses(1)	[1]										306.1		364.8		362.8
Depreciation and amortization											15.4		16.2		15.9
General and administrative											5.7		6.1		5.5
Other (gains) and charges											6.8		1.0	[2]	1.1
Total operating costs and expenses											334.0		388.1		385.3
Operating income											12.8		47.6		49.9
Interest expenses											0.0		0.3		0.0
Other (income), net											0.0		0.0		0.0
Income (loss) before income taxes											12.8		47.3		49.9
Segment assets		228.2	[3]				$ 163.9				228.2	[3]	163.9
Payments for property and equipment											8.1		$ 10.8		7.6
Number of properties sold and leased back under operating leases | Location							1						1
Gain from sale leaseback transaction													$ (0.5)
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Total revenues											0.0		0.0		0.0
Company restaurant expenses(1)	[1]										0.6		0.6		0.6
Depreciation and amortization											13.0		11.3		10.5
General and administrative											98.5		104.3		90.9
Other (gains) and charges											5.3		0.9	[2]	8.9
Total operating costs and expenses											117.4		117.1		110.9
Operating income											(117.4)		(117.1)		(110.9)
Interest expenses											55.0		58.1		59.0
Other (income), net											(1.3)		(2.7)		(3.1)
Income (loss) before income taxes											(171.1)		(172.5)		(166.8)
Segment assets		$ 160.5	[3]				$ 91.6				160.5	[3]	91.6
Payments for property and equipment											8.2		27.7		8.4
Company sales [Member]
Segment Reporting Information [Line Items]
Revenues											3,004.9		3,106.2		3,041.5
Company sales [Member] | Chili's Restaurants [Member]
Segment Reporting Information [Line Items]
Revenues											2,673.5	[4]	2,692.6		2,628.3
Company sales [Member] | Maggiano's Restaurants [Member]
Segment Reporting Information [Line Items]
Revenues											331.4		413.6		413.2
Company sales [Member] | Corporate and Other [Member]
Segment Reporting Information [Line Items]
Revenues											0.0		0.0		0.0
Royalty [Member]
Segment Reporting Information [Line Items]
Revenues											33.9		53.1
Royalty [Member] | Chili's Restaurants [Member]
Segment Reporting Information [Line Items]
Revenues											33.7	[4]	52.8
Royalty [Member] | Maggiano's Restaurants [Member]
Segment Reporting Information [Line Items]
Revenues											0.2		0.3
Royalty [Member] | Corporate and Other [Member]
Segment Reporting Information [Line Items]
Revenues											0.0		0.0
Franchise fees and other revenues [Member]
Segment Reporting Information [Line Items]
Revenues											39.7		58.6
Franchise fees and other revenues [Member] | Chili's Restaurants [Member]
Segment Reporting Information [Line Items]
Revenues											24.5	[4]	36.8
Franchise fees and other revenues [Member] | Maggiano's Restaurants [Member]
Segment Reporting Information [Line Items]
Revenues											15.2		21.8
Franchise fees and other revenues [Member] | Corporate and Other [Member]
Segment Reporting Information [Line Items]
Revenues											0.0		0.0
Franchise and other revenues [Member]
Segment Reporting Information [Line Items]
Revenues											73.6		111.7		93.9
Franchise and other revenues [Member] | Chili's Restaurants [Member]
Segment Reporting Information [Line Items]
Revenues											58.2	[4]	89.6		71.9
Franchise and other revenues [Member] | Maggiano's Restaurants [Member]
Segment Reporting Information [Line Items]
Revenues											15.4		22.1		22.0
Franchise and other revenues [Member] | Corporate and Other [Member]
Segment Reporting Information [Line Items]
Revenues											$ 0.0		0.0		$ 0.0
Land, Buildings and Improvements [Member]
Segment Reporting Information [Line Items]
Sale leaseback transaction, net book value							$ 185.3						$ 185.3
Franchisee [Member]
Segment Reporting Information [Line Items]
Number of properties sold and leased back under operating leases																90
Franchisee [Member] | Chili's Restaurants [Member]
Segment Reporting Information [Line Items]
Number of restaurants | Restaurant							3						3			116

[1] Company restaurant expenses include Food and beverage costs, Restaurant labor and Restaurant expenses, including advertising expenses. Fiscal 2020 and fiscal 2019, are presented under the ASC 606 revenue accounting standard such that advertising contributions received from Chili’s franchisees are recorded as Franchise fees and other revenues, which differs from fiscal 2018 that included advertising contributions on a net basis within Company restaurant expenses.

[2] ⁽⁴⁾  Other (gains) and charges in fiscal 2019 included the net impact from our completed sale leaseback transactions of 151 Company-owned Chili’s restaurant properties and one Maggiano’s property. As part of this transaction, we sold the related restaurant fixed assets, net of accumulated depreciation, totaling $185.3 million. Chili’s recognized a $26.8 million, and Maggiano’s recognized a $0.5 million 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. Refer to Note 4 - Leases for further details.

[3] Segment assets for fiscal 2020 are presented in accordance with the newly adopted ASC 842 lease accounting standard that now include Operating lease assets. Refer to Note 4 - Leases for further details.

[4] Chili’s segment information for fiscal 2020 includes the results of operations and fair value of assets and goodwill related to the 116 restaurants purchased from a former franchisee since the September 5, 2019 acquisition date. Refer to Note 3 - Chili's Restaurant Acquisition for further details.