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Income Taxes - Temporary Differences (Details) - USD ($) $ in Millions | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Gross Deferred Tax Assets: |  |
Bad debt reserve | $ 5.0 | $ 5.5
Net operating loss | 13.0 | 4.8
Accrued and other shared-based compensation | 20.6 | 21.6
Accrued expenses |  | 8.6
U.S. foreign income tax credits | 5.3 |
Other income tax credits | 0.7 |
Customer deposits | 5.7 | 6.1
Installment sale | 6.7 | 6.6
Cash flow hedges | 0.8 |
Unrealized foreign exchange | 18.2 | 7.6
Total gross deferred tax assets | 76.0 | 60.8
Less: Valuation allowance | 2.9 |
Gross deferred tax assets, net of valuation allowance | 73.1 | 60.8
Deferred Tax Liabilities: |  |
Depreciation | (20.8) | (13.1)
Goodwill and intangible assets | (56.2) | (45.3)
Prepaid expenses, deductible for tax purposes | (4.4) | (4.5)
Accrued expenses | (2.5) |
Unrealized derivatives | (5.1) | (8.2)
Other |  | (1.2)
Gross deferred tax liabilities | (89.0) | (72.3)
Net deferred tax liabilities | (15.9) | (11.5)
Reported on the consolidated balance sheets as: |  |
Other current assets for deferred tax assets, current |  | 22.8
Identifiable intangible and other non-current assets for deferred tax assets, non-current | 20.7 | 15.6
Accrued expenses and other current liabilities for deferred tax liabilities, current |  | 0.4
Non-current income tax liabilities, net for deferred tax liabilities, non-current | $ 36.6 | $ 49.4

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