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Revenue Recognition - Additional Information (Details) - USD ($) $ in Millions |  | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jan. 01, 2018 | Mar. 31, 2018 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |
Reduction in services revenue |  |  | $ (437.5) | $ (362.5) |  |
Reduction in cost of services | [1] |  | (121.9) | (103.3) |  |
Increase in instant product revenue |  |  | 150.2 | 140.2 |  |
Increase in operating income |  |  | 49.4 | 88.0 |  |
Reduction in inventory |  |  | (231.2) |  |  | $ (243.1)
Amounts recognized in revenue |  |  | (25.0) |  |  |
Accounting Standards Update 2014-09 |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |
Increase in contract liabilities due to reevaluation of performance obligation |  | $ 9.7 |  |  |  |
Reduction of deferred costs due to lack of evidence for price |  | 11.4 |  |  |  |
AOCI Attributable to Parent | Accounting Standards Update 2014-09 |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |
Net increase (decrease) to accumulated comprehensive loss |  | $ 10.9 |  |  |  |
Scenario, Forecast | AOCI Attributable to Parent | Accounting Standards Update 2014-09 |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |
Expected impact on revenue and operating income for remainder of year, less than |  |  |  |  | $ 10.0 |
Gaming | Gaming operations | Difference between Revenue Guidance in Effect before and after Topic 606 |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |
Reduction in cost of services |  |  | 4.4 | 7.0 |  |
Gaming | Gaming operations | Difference between Revenue Guidance in Effect before and after Topic 606 | Accounting Standards Update 2014-09 |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |
Reduction in services revenue |  |  | 4.4 | $ 7.0 |  |
Lottery | Instant products | Accounting Standards Update 2014-09 |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |
Amounts recognized in revenue |  |  | 34.2 |  |  |
Lottery | Instant products | Difference between Revenue Guidance in Effect before and after Topic 606 | Accounting Standards Update 2014-09 |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |
Increase in instant product revenue |  |  | 8.1 |  |  |
Increase in operating income |  |  | 6.3 |  |  |
Increase in contract assets |  |  | 47.9 |  |  | 52.0
Reduction in inventory |  |  | $ 38.3 |  |  | 33.0
Lottery | Instant products | AOCI Attributable to Parent | Difference between Revenue Guidance in Effect before and after Topic 606 | Accounting Standards Update 2014-09 |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |
Net increase (decrease) to accumulated comprehensive loss |  |  |  |  |  | $ (19.0)
[1] | Exclusive of D&A

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