Segment Information - Narrative (Details) - record record in Millions	3 Months Ended
	Mar. 31, 2020	Sep. 30, 2020	Jul. 06, 2020
Segment Reporting Information [Line Items]
Number of business records (more than)	355
O'Charley's
Segment Reporting Information [Line Items]
Ownership interest, equity method investment		65.40%
99 Restaurants
Segment Reporting Information [Line Items]
Ownership interest, equity method investment		88.50%
Dun & Bradstreet
Segment Reporting Information [Line Items]
Ownership interest, equity method investment		18.10%	18.10%