v3.10.0.1

Income Taxes (Details 4) - USD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Deferred tax assets: |  |
Net operating loss and other carryforwards | $ 4,289.8 | $ 5,074.2
Property and equipment, net | 1,923.4 | 2,064.2
Debt | 322.9 | 544.1
Investments | 156.2 | 97.0
Share-based compensation | 79.5 | 71.7
Derivative instruments | 72.5 | 155.8
Intangible assets | 14.8 | 44.7
Other future deductible amounts | 161.3 | 87.2
Deferred tax assets | 7,020.4 | 8,138.9
Valuation allowance | (4,094.7) | (4,244.7)
Deferred tax assets, net of valuation allowance | 2,925.7 | 3,894.2
Deferred tax liabilities: |  |
Intangible assets | (193.8) | (298.3)
Deferred revenue | (178.9) | (229.8)
Property and equipment, net | (167.4) | (212.4)
Investments (including consolidated partnerships) | (0.8) | (130.3)
Other future taxable amounts | (129.5) | (115.8)
Deferred tax liabilities | (670.4) | (986.6)
Net deferred tax asset | $ 2,255.3 | $ 2,907.6

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