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Shareholders' Equity - Summary of Equity Distribution (Details) - Class C Capital Stock - Equity Distribution Agreement - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2021 | Jun. 30, 2021
Class of Stock [Line Items] |  |
Shares of Class C capital stock sold (in shares) | 0 | 3,163,502
Weighted-average issuance price per share (usd per share) |  | $ 174.0511
Gross proceeds |  | $ 550,611
Net proceeds from sale of stock |  | 544,600
Payments for commissions |  | $ 6,100

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