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v3.6.0.2

Business and Summary of Significant Accounting Policies - Revision of Prior Periods (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 12 Months Ended
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Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Consolidated Statements of Income |  |  |  |  |  |  |  |  |  |  |
Income taxes |  |  |  |  |  |  |  |  | $ 235.6 | $ 263.4 | $ 246.1
Net income |  |  |  |  |  |  |  |  | 739.0 | 827.2 | 767.4
Net income (controlling interest) | $ 150.2 | $ 110.2 | $ 108.3 | $ 104.0 | $ 147.5 | $ 107.7 | $ 127.6 | $ 126.7 | $ 472.8 | $ 509.5 | $ 433.9
Earnings per share - basic (in dollars per share) |  |  |  |  |  |  |  |  | $ 8.73 | $ 9.37 | $ 7.89
Earnings per share - diluted (in dollars per share) | $ 2.67 | $ 2.02 | $ 1.98 | $ 1.90 | $ 2.67 | $ 1.96 | $ 2.29 | $ 2.26 | $ 8.57 | $ 9.17 | $ 7.70
Consolidated Balance Sheet |  |  |  |  |  |  |  |  |  |  |
Additional paid-in capital | $ 1,073.5 |  |  |  | $ 694.9 |  |  |  | $ 1,073.5 | $ 694.9 |
Retained earnings | $ 3,054.4 |  |  |  | 2,581.6 |  |  |  | 3,054.4 | 2,581.6 |
Consolidated Statements of Cash Flows |  |  |  |  |  |  |  |  |  |  |
Net income |  |  |  |  |  |  |  |  | 739.0 | 827.2 | $ 767.4
Deferred income tax provision |  |  |  |  |  |  |  |  | $ 59.3 | 101.2 | 81.0
Adjustment for Deferred Tax Benefit | Scenario, Previously Reported |  |  |  |  |  |  |  |  |  |  |
Consolidated Statements of Income |  |  |  |  |  |  |  |  |  |  |
Income taxes |  |  |  |  |  |  |  |  |  | 256.9 | 227.9
Net income |  |  |  |  |  |  |  |  |  | 833.7 | 785.6
Net income (controlling interest) |  |  |  |  |  |  |  |  |  | $ 516.0 | $ 452.1
Earnings per share - basic (in dollars per share) |  |  |  |  |  |  |  |  |  | $ 9.49 | $ 8.22
Earnings per share - diluted (in dollars per share) |  |  |  |  |  |  |  |  |  | $ 9.28 | $ 8.01
Consolidated Balance Sheet |  |  |  |  |  |  |  |  |  |  |
Additional paid-in capital |  |  |  |  | 597.2 |  |  |  |  | $ 597.2 |
Retained earnings |  |  |  |  | 2,679.3 |  |  |  |  | 2,679.3 |
Consolidated Statements of Cash Flows |  |  |  |  |  |  |  |  |  |  |
Net income |  |  |  |  |  |  |  |  |  | 833.7 | $ 785.6
Deferred income tax provision |  |  |  |  |  |  |  |  |  | 94.7 | 62.8
Adjustment for Deferred Tax Benefit | Restatement Adjustment |  |  |  |  |  |  |  |  |  |  |
Consolidated Statements of Income |  |  |  |  |  |  |  |  |  |  |
Income taxes |  |  |  |  |  |  |  |  |  | 6.5 | 18.2
Net income |  |  |  |  |  |  |  |  |  | (6.5) | (18.2)
Net income (controlling interest) |  |  |  |  |  |  |  |  |  | $ (6.5) | $ (18.2)
Earnings per share - basic (in dollars per share) |  |  |  |  |  |  |  |  |  | $ (0.12) | $ (0.33)
Earnings per share - diluted (in dollars per share) |  |  |  |  |  |  |  |  |  | $ (0.11) | $ (0.31)
Consolidated Balance Sheet |  |  |  |  |  |  |  |  |  |  |
Additional paid-in capital |  |  |  |  | 97.7 |  |  |  |  | $ 97.7 |
Retained earnings |  |  |  |  | $ (97.7) |  |  |  |  | (97.7) |
Consolidated Statements of Cash Flows |  |  |  |  |  |  |  |  |  |  |
Net income |  |  |  |  |  |  |  |  |  | (6.5) | $ (18.2)
Deferred income tax provision |  |  |  |  |  |  |  |  |  | $ 6.5 | $ 18.2

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