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Dividend (Detail) - $ / shares | Sep. 05, 2017 | Jun. 15, 2017 | Mar. 17, 2017 | Feb. 08, 2017 | Sep. 09, 2016 | Jun. 10, 2016 | Mar. 11, 2016 | Jan. 11, 2016
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Stockholders' Equity Note [Abstract] |  |  |  |  |  |  |  |
Amount Paid Per Share (in Dollars per share) | $ 110 | $ 110 | $ 110 | $ 110 | $ 110 | $ 110 | $ 110 | $ 110

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- Definition Aggregate dividends paid during the period for each share of common stock outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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- References No definition available. + Details
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