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Description of the Business and Summary of Significant Accounting Policies - Income Taxes (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014
Operating Loss Carryforwards [Line Items] |  |
Current income taxes receivable | $ 27.5 | $ 89.2
Valuation allowance | 95.6 | 107.3
Deferred tax liabilities, deferred expense | (11.7) | (71.4)
U.S. Federal |  |
Operating Loss Carryforwards [Line Items] |  |
Valuation allowance | $ 46.8 | 58.1
Bally Acquisition |  |
Operating Loss Carryforwards [Line Items] |  |
Deferred tax liabilities, deferred expense |  | $ 79.1

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