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Goodwill (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Change in the carrying amount of goodwill |  |  |
Balance at the beginning of the period | $ 1,724.8 | $ 1,736.4 | $ 1,691.6
Acquisitions | 103.4 | 0.4 | 51.3
Consolidation of a joint venture entity |  |  | 15.2
Purchase price allocation adjustments |  | (0.4) | 2.1
Sale of business |  |  | (17.1)
Disposal of businesses | (1.0) |  |
Effect of foreign currency translation | 0.2 | (11.6) | (6.7)
Balance at the end of the period | 1,827.4 | $ 1,724.8 | $ 1,736.4
Accumulated impairment losses | 0.0 |  |
Goodwill, tax deductible amount | 662.5 |  |
2016 Acquisitions |  |  |
Change in the carrying amount of goodwill |  |  |
Balance at the end of the period | 103.4 |  |
Goodwill, tax deductible amount | $ 103.4 |  |

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=64834752&loc=SL49117168-202975 + Details
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