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Equity - Share Repurchase Program and Share Repurchase Activity (Details) - USD ($) | 1 Months Ended | 3 Months Ended |  |
--- | --- | --- | --- | ---
Apr. 30, 2021 | Mar. 31, 2021 | Mar. 31, 2020 | Feb. 04, 2021 | May 31, 2015
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |
Stock repurchase program, authorized amount |  |  |  |  | $ 1,200,000,000
Stock repurchase program, additional authorized amount |  |  |  | $ 300,000,000 |
Stock repurchase program, remaining authorized repurchase amount |  | $ 500,000,000 |  |  |
Number of shares repurchased (in shares) |  | 2,274,710 | 417,707 |  |
Cash paid for repurchased shares |  | $ 398,450,000 | $ 73,164,000 |  |
Treasury stock, average price paid per share (in dollars per share) |  | $ 180.44 | $ 151.22 |  |
Subsequent Event |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |
Stock repurchase program, remaining authorized repurchase amount | $ 290,000,000 |  |  |  |
Open Market Purchases |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |
Cash paid for repurchased shares |  | $ 8,000,000.0 |  |  |
Open Market Purchases | Subsequent Event |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |
Cash paid for repurchased shares | $ 20,000,000.0 |  |  |  |

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