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Equity - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions | 1 Months Ended | 3 Months Ended |
--- | --- | --- | ---
Mar. 31, 2020 | Mar. 31, 2021 | Dec. 31, 2020
Equity, Class of Treasury Stock [Line Items] |  |  |
Sale of stock, shares issued (in shares) | 2,100,000 |  |
Sale of stock, price per share (in dollars per share) | $ 115.00 |  |
Net proceeds from sale of stock | $ 228.0 |  |
Number of shares repurchased under share repurchase plan (in shares) |  | 0 |
Treasury shares that were previously surrendered by employees to satisfy tax withholdings (in shares) |  | 1,200,000 |
Treasury stock (in shares) |  | 11,900,000 | 11,800,000
Over-Allotment Option |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |
Sale of stock, shares issued (in shares) | 300,000 |  |
Previous share repurchase programs |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |
Number of shares repurchased under share repurchase plan (in shares) |  | 10,700,000 |

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