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Income Taxes - Rate Reconciliation (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Income Tax Disclosure [Abstract] |  |  |
Federal statutory | $ (111.9) | $ (23.9) | $ 119.0
Foreign income taxes | (40.2) | (39.7) | (96.3)
Change in enacted tax rate | 0.2 | (8.3) | (107.6)
Transition tax | (7.5) | 5.8 | 108.3
State and local | (20.0) | (12.8) | (6.3)
Tax credits | (9.6) | (20.1) | (8.8)
Valuation allowance | 12.6 | 12.9 | (6.1)
Goodwill impairment | 92.4 | 21.6 | 0.0
Withholding taxes | 4.0 | 6.6 | 4.7
U.S. tax on unremitted foreign earnings | (2.8) | 4.1 | (18.6)
Global intangible low-taxed income | 31.1 | 8.0 | 0.0
Uncertain tax positions | 5.9 | (9.8) | 13.5
Other | (3.1) | (1.5) | 0.7
Total income tax expense (benefit) | $ (48.9) | $ (57.1) | $ 2.5

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