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Consolidated Statements of Income and Comprehensive Income (Parenthetical) - USD ($) $ in Thousands | 12 Months Ended
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Aug. 26, 2017 | Aug. 27, 2016 | Aug. 29, 2015
Income Statement [Abstract] |  |  |
Amortization of prior service credit (net of tax of $15,409, $2,947, and $2,110) | $ 15,409 | $ 2,947 | $ 2,110
Amortization of net actuarial loss (net of tax of $5,975, $621, and $565) | 5,976 | 621 | 565
Increase in actuarial loss (net of tax of $35, $415, and $250) | 35 | 415 | 250
Plan amendment (net of tax of $2,402, $10,895, and $1,509) | 2,402 | 10,895 | 1,509
Change in fair value of interest rate swap (net of tax of $316, $0, and $0) | $ 314 | $ 0 | $ 0

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- Definition Amount of tax (expense) benefit of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e640-108580 + Details
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- Definition Amount of tax expense (benefit), after reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669646-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e640-108580 + Details
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- Definition Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e640-108580 + Details
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- Definition Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Decrease (Increase) in Actuarial Loss, Tax + References No definition available. + Details
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- Definition Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Plan Amendment, Tax + References No definition available. + Details
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