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Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2014 | Jun. 30, 2015
Supplemental Schedule of Noncash Investing and Financing Activities |  |
Cash dividends declared, but not yet paid | $ 2.7 | $ 4.2
Assets acquired, net of cash | 454.5 |
Liabilities assumed | $ 297.4 |

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