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v3.19.1

Changes in Shareholders' Equity Changes in Shareholders' Equity (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Jan. 01, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Stockholders' Equity Attributable to Parent | $ 3,320.1 |  |
Other Comprehensive Income (Loss) | 129.1 | $ (95.7) |
Total Comprehensive Income (Loss) | 284.4 | (41.9) |
Cash Dividends and Dividend Equivalents to Shareholders ($0.24 per share) | (16.4) | (12.5) |
Equity-based Compensation Cost | 7.6 | 3.4 |
Equity-based Awards, Net of Shares Exchanged | (5.6) | (0.8) |
Stockholders' Equity Attributable to Parent | 3,050.1 |  |
AOCI Attributable to Parent [Member] |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Cumulative Effect of New Accounting Principle in Period of Adoption |  |  | $ 18.2
Other Comprehensive Income (Loss) | 129.1 | (95.7) |
Retained Earnings [Member] |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Cumulative Effect of New Accounting Principle in Period of Adoption |  |  | $ (18.2)
Cash Dividends and Dividend Equivalents to Shareholders ($0.24 per share) | (16.4) | (12.5) |
Equity-based Awards, Net of Shares Exchanged | $ (4.7) | $ (1.2) |

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