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Equity - Share Repurchase Program and Share Repurchase Activity (Details) - USD ($) | 1 Months Ended | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jul. 31, 2021 | Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Jul. 29, 2021 | Apr. 30, 2021 | Feb. 28, 2021 | Dec. 31, 2015
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |
Stock repurchase program, authorized amount |  | $ 2,000,000,000.0 |  | $ 2,000,000,000.0 |  |  |  |  | $ 1,200,000,000
Stock repurchase program, additional authorized amount |  |  |  |  |  |  | $ 500,000,000.0 | $ 300,000,000.0 |
Stock repurchase program, remaining authorized repurchase amount |  | $ 300,000,000 |  | $ 300,000,000 |  |  |  |  |
Number of shares repurchased (in shares) |  | 3,094,706 | 5,999 | 5,369,416 | 423,706 |  |  |  |
Cash paid for repurchased shares |  | $ 684,900,000 | $ 698,000 | $ 1,083,350,000 | $ 73,862,000 |  |  |  |
Treasury stock, average price paid per share (in dollars per share) |  | $ 218.33 | $ 116.29 | $ 202.28 | $ 150.72 |  |  |  |
Subsequent Event |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |
Stock repurchase program, additional authorized amount |  |  |  |  |  | $ 800,000,000 |  |  |
Stock repurchase program, remaining authorized repurchase amount | $ 231,000,000 |  |  |  |  |  |  |  |
Open Market Purchases |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |
Cash paid for repurchased shares |  |  |  | $ 8,000,000.0 | $ 10,000,000.0 |  |  |  |
Open Market Purchases | Subsequent Event |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |
Cash paid for repurchased shares | $ 10,800,000 |  |  |  |  |  |  |  |

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