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Subsequent Event - Additional Information (Detail) - $ / shares | Jul. 09, 2020 | Apr. 29, 2020 | Oct. 29, 2019 | Jul. 10, 2019 | Jul. 10, 2018
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Subsequent Event [Line Items] |  |  |  |  |
Annual common stock dividend declared |  | $ 1.00 | $ 2.00 | $ 3.00 | $ 2.55
Dividend payable date, declared day |  | Apr. 29, 2020 | Oct. 29, 2019 | Jul. 10, 2019 | Jul. 10, 2018
Dividend payable date |  | Jun. 17, 2020 | Dec. 10, 2019 | Aug. 20, 2019 | Aug. 17, 2018
Stockholders of record date |  | May 27, 2020 | Nov. 26, 2019 | Aug. 06, 2019 | Aug. 03, 2018
Subsequent Event [Member] |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |
Special cash dividend | $ 1.85 |  |  |  |
Annual common stock dividend declared | $ 0.65 |  |  |  |
Dividend payable date, declared day | Jul. 09, 2020 |  |  |  |
Dividend payable date | Aug. 21, 2020 |  |  |  |
Stockholders of record date | Aug. 07, 2020 |  |  |  |

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- Definition The per share amount of a special dividend declared, as of the financial reporting date. + References No definition available. + Details
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Period Type: | instant

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- Definition Date the declared dividend will be paid, in CCYY-MM-DD format. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586 + Details
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- Definition The per share amount of a dividend declared, but not paid, as of the financial reporting date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586 + Details
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- Definition Date the dividend to be paid was declared, in CCYY-MM-DD format. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586 + Details
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- Definition Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format. + References No definition available. + Details
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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
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- Details
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