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Consolidated Statements of Cash Flows (Parenthetical) $ in Millions |  | 9 Months Ended
--- | --- | ---
Jun. 22, 2016 USD ($) promissory_note | Sep. 30, 2016 USD ($) | Sep. 30, 2015 USD ($)
Supplemental Schedule of Noncash Investing and Financing Activities |  |  |  |  |
Cash dividends declared, but not yet paid |  |  | $ 4.2 |  | $ 4.2
Previous percentage ownership of noncontrolling owners |  | 49.00% | 49.00% | [1],[2] |
Settlement of promissory notes |  | $ 17.7 |  |  |
Assets acquired, net of cash | [1] |  | $ 321.6 |  | 100.1
Liabilities assumed | [1] |  | $ 59.2 |  | $ 22.3
Tobras | Disposal Group, Held-for-sale, Not Discontinued Operations |  |  |  |  |
Supplemental Schedule of Noncash Investing and Financing Activities |  |  |  |  |
Number of promissory notes settled in acquisition item | promissory_note |  | 2 |  |  |
[1] | Amounts may not add due to rounding
[2] | Relates to Tobras. See Note 3. Acquisitions, Asset and Liabilities Held for Sale.

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