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Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015
Income Tax Contingency [Line Items] |  |
Unrecognized tax benefits, net | $ 88.6 |
Unrecognized tax benefits that would impact effective tax rate | 69.9 |
Deferred Tax Asset/Liability Related to Advanced Pricing Agreement |  | $ 44.0
Reconciliation of the total gross unrecognized tax benefits |  |
Balance, January 1 | 127.3 | 60.4
Additions based on tax positions related to current year | 16.1 | 20.7
Additions for tax positions of prior years | 1.6 | 6.7
Additions from acquisitions | 0.0 | 53.4
Reductions for closure of tax audits and settlements | (45.7) | (10.4)
Reductions for lapse in statute of limitations | (5.0) | (0.3)
Translation adjustment | (3.2) | (3.2)
Balance, December 31 | 91.1 | 127.3
Income tax penalties and interest expense | 3.2 | 2.3
Income tax penalties and interest accrued on unrecognized tax benefits | 16.0 | $ 12.8
Other Current Liabilities [Member] |  |
Reconciliation of the total gross unrecognized tax benefits |  |
Balance, December 31 | $ 15.5 |

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- Definition Amount of unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=65882285&loc=SL6600010-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Unrecognized Tax Benefit -URI http://asc.fasb.org/extlink&oid=6527854 + Details
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