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Impairments and Assets Held For Sale - Impairment and Accelerated D&A (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Asset impairment and accelerated depreciation and amortization |  |  |  | $ 0.0 | $ 4.8 | $ 169.7
Income tax benefit |  |  |  | $ (14.5) | 125.0 | 299.9
Trade names |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Intangible asset carrying value | $ 97.5 |  |  |  |  | 97.5
Finite-lived intangible asset useful life | 15 years |  |  |  |  |
Minimum |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Finite-lived intangible asset useful life |  |  |  | 2 years |  |
Maximum |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Finite-lived intangible asset useful life |  |  |  | 16 years |  |
Buildings |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Asset impairment and accelerated depreciation and amortization |  |  |  | $ 0.0 | 4.8 | 11.5
Non-cash charge |  |  |  |  | 4.8 | 6.6
Lottery and other assets |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Asset impairment and accelerated depreciation and amortization |  |  |  | 0.0 | 0.0 | 13.8
Accelerated depreciation expense | $ 11.9 |  |  |  |  |
Gaming equipment |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Asset impairment and accelerated depreciation and amortization |  |  |  | 0.0 | 0.0 | 15.8
Accelerated depreciation expense |  |  |  |  |  | 15.8
Trade names |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Asset impairment and accelerated depreciation and amortization |  |  |  | $ 0.0 | $ 0.0 | $ 128.6
Impairment of intangible assets |  | $ 103.6 | $ 25.0 |  |  |
Income tax benefit |  | $ 38.8 | $ 9.5 |  |  |
Discount rate |  | 9.00% |  |  |  |
Trade names | Minimum |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Royalty rate |  | 0.50% |  |  |  |
Trade names | Maximum |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Royalty rate |  | 1.00% |  |  |  |

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