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Revenue Recognition - Disaggregated Revenue (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2019 | Mar. 31, 2018
Disaggregation of Revenue [Line Items] |  |
Total operating revenues | $ 274.5 | $ 292.4
Restaurant sales |  |
Disaggregation of Revenue [Line Items] |  |
Total operating revenues | 257.8 | 273.8
Restaurant Group |  |
Disaggregation of Revenue [Line Items] |  |
Total operating revenues | 257.8 | 273.8
Restaurant Group | Restaurant sales |  |
Disaggregation of Revenue [Line Items] |  |
Total operating revenues | 245.3 | 259.2
Restaurant Group | Bakery sales |  |
Disaggregation of Revenue [Line Items] |  |
Total operating revenues | 11.0 | 13.2
Restaurant Group | Franchise and other |  |
Disaggregation of Revenue [Line Items] |  |
Total operating revenues | 1.5 | 1.4
T-System | T-System, point-in-time |  |
Disaggregation of Revenue [Line Items] |  |
Total operating revenues | 4.8 | 6.7
T-System | T-System, over time |  |
Disaggregation of Revenue [Line Items] |  |
Total operating revenues | 7.4 | 8.7
Corporate and Other | Real estate and resort |  |
Disaggregation of Revenue [Line Items] |  |
Total operating revenues | 4.4 | 2.9
Corporate and Other | Other |  |
Disaggregation of Revenue [Line Items] |  |
Total operating revenues | 0.1 | 0.3
Total Other Operating Revenue |  |
Disaggregation of Revenue [Line Items] |  |
Total operating revenues | $ 16.7 | $ 18.6

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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 + Details
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