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Equity and Comprehensive Income - Additional Information - Dividends (Detail) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 8 Months Ended
--- | --- | ---
May 07, 2017 | May 08, 2016 | May 07, 2017 | May 08, 2016
Dividends Payable [Line Items] |  |  |  |
Dividends declared | $ 7.50 | $ 0.45 | $ 8.40 | $ 1.25
Payments of Dividends |  |  | $ 396 | $ 352
Dividend Rate |  |  |  |
Dividends Payable [Line Items] |  |  |  |
Dividends declared | 0.50 | $ 0.45 |  |
Special Dividend [Member] |  |  |  |
Dividends Payable [Line Items] |  |  |  |
Dividends declared | $ 7.00 |  |  |
Special Dividends Paid | $ 3,290 |  |  |

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- Definition Aggregate dividends declared 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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