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Income Taxes (Details 1) - USD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Components of deferred tax assets and liabilities |  |
Tax credits | $ 60.0 | $ 201.1
Inventory, other reserves, and accruals | 147.8 | 250.6
Intangibles, net | 378.8 | 459.8
Net operating loss | 209.8 | 65.9
Share-based compensation | 26.9 | 61.5
Other | 25.1 | 49.0
Valuation allowance | (16.6) | (16.1)
Total deferred tax assets | 831.8 | 1,071.8
Purchased intangible assets | (250.7) | (376.6)
Depreciation, amortization and other | (107.9) | (113.5)
Total deferred tax liabilities | $ 358.6 | $ 490.1

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