v3.20.4

Shareholders' Equity (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2020
Equity, Class of Treasury Stock [Line Items] |  |  |
Total Share Repurchase Cost | $ 165.3 | $ 231.8 |
Payments for share repurchase contracts |  |  | $ 46.4
Cash received from share repurchase contracts | 47.5 | 0.0 |
Common Stock |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |
Payments for accrued repurchases of common stock | $ 7.4 | $ 8.7 |
Common Stock |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |
Shares repurchased | 1.7 | 2.2 |
Average price per share | $ 93.45 | $ 102.99 |
Total Share Repurchase Cost | $ 159.9 | $ 223.1 |
Common Stock | Other Current Liabilities |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |
Total Share Repurchase Cost | $ 2.0 |  |

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