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Revenue Recognition - Summary of Revenue by Type (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2018 | Mar. 31, 2017
Gaming |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | $ 443.0 | $ 440.0
Gaming | Gaming operations |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 161.3 | 172.4
Gaming | Gaming machine sales |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 144.8 | 156.2
Gaming | Gaming systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 75.0 | 61.5
Gaming | Table products |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 61.9 | 49.9
Lottery |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 201.7 | 189.1
Lottery | Instant products |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 150.2 | 141.7
Lottery | Lottery systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 51.5 | 47.4
Social |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 97.4 | 80.2
Social | Social gaming |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 97.4 | 80.2
Digital |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 69.7 | 16.1
Digital | Sports and platform |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 25.9 | 0.0
Digital | Gaming and other |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | $ 43.8 | $ 16.1

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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/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 32 -Paragraph 2A -URI http://asc.fasb.org/extlink&oid=82859839&loc=SL82860478-203043 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130543-203045 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130539-203045 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130545-203045 + Details
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