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Summary of Significant Accounting Policies - Schedule of Impacts of New Accounting Pronouncements on Consolidated Balance Sheet (Details) - USD ($) $ in Thousands | Aug. 31, 2019 | Aug. 26, 2018 | Aug. 25, 2018 | Aug. 26, 2017 | Aug. 27, 2016
--- | --- | --- | --- | --- | ---
Assets |  |  |  |  |
Prepaid expenses and other current assets | $ 35,699 | $ 33,288 | $ 21,899 |  |
Total current assets | 913,791 | 796,189 | 784,800 |  |
Other assets | 84,674 | 74,664 | 30,259 |  |
Total assets | 2,047,320 | 1,899,180 | 1,843,386 | $ 1,819,128 |
Liabilities and shareholders’ equity |  |  |  |  |
Accrued and deferred income taxes | 99,172 | 88,497 | 74,070 |  |
Total liabilities | 406,090 | 392,846 | 378,419 |  |
Retained earnings | 1,588,075 | 1,446,606 | 1,405,239 |  |
Total shareholders’ equity | 1,641,230 | 1,506,334 | 1,464,967 | $ 1,453,192 | $ 1,364,781
Total liabilities and shareholders’ equity | 2,047,320 | $ 1,899,180 | 1,843,386 |  |
Under Historical Guidance |  |  |  |  |
Assets |  |  |  |  |
Prepaid expenses and other current assets | 23,285 |  |  |  |
Total current assets | 901,377 |  |  |  |
Other assets | 34,339 |  |  |  |
Total assets | 1,984,571 |  |  |  |
Liabilities and shareholders’ equity |  |  |  |  |
Accrued and deferred income taxes | 83,114 |  |  |  |
Total liabilities | 390,032 |  |  |  |
Retained earnings | 1,541,384 |  |  |  |
Total shareholders’ equity | 1,594,539 |  |  |  |
Total liabilities and shareholders’ equity | 1,984,571 |  |  |  |
Accounting Standards Update 2014-09 |  |  |  |  |
Assets |  |  |  |  |
Prepaid expenses and other current assets |  |  | 11,389 |  |
Total current assets |  |  | 11,389 |  |
Other assets |  |  | 44,405 |  |
Total assets |  |  | 55,794 |  |
Liabilities and shareholders’ equity |  |  |  |  |
Accrued and deferred income taxes |  |  | 14,427 |  |
Total liabilities |  |  | 14,427 |  |
Retained earnings |  |  | 41,367 |  |
Total shareholders’ equity |  |  | 41,367 |  |
Total liabilities and shareholders’ equity |  |  | $ 55,794 |  |
Accounting Standards Update 2014-09 | Capitalization of Contract Costs and Impact of Adopting New Revenue Standard |  |  |  |  |
Assets |  |  |  |  |
Prepaid expenses and other current assets | 12,414 |  |  |  |
Total current assets | 12,414 |  |  |  |
Other assets | 50,335 |  |  |  |
Total assets | 62,749 |  |  |  |
Liabilities and shareholders’ equity |  |  |  |  |
Accrued and deferred income taxes | 16,058 |  |  |  |
Total liabilities | 16,058 |  |  |  |
Retained earnings | 46,691 |  |  |  |
Total shareholders’ equity | 46,691 |  |  |  |
Total liabilities and shareholders’ equity | $ 62,749 |  |  |  |

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