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Shareholders' Equity - Additional Information (Details) | Sep. 30, 2019 USD ($) shares
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Second Accelerated Share Repurchase Agreement | Maximum |
Accelerated Share Repurchases [Line Items] |
Shares repurchased, authorized amount | $ 100,000,000.0
Third Accelerated Share Repurchase Agreement |
Accelerated Share Repurchases [Line Items] |
Shares repurchased, authorized amount | $ 9,700,000
Shares repurchased, authorized shares | shares | 274,981
Accelerated Share Repurchase Agreement |
Accelerated Share Repurchases [Line Items] |
Stock repurchase program, remaining authorized repurchase amount | $ 490,200,000

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