Consolidated Statements of Income and Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
Aug. 25, 2018	Aug. 26, 2017	Aug. 27, 2016
Income Statement [Abstract]
Amortization of prior service credit, tax	$ 0	$ 15,409	$ 2,947
Amortization of net actuarial loss, tax	11	5,976	621
Increase in actuarial loss, tax	0	35	415
Plan amendment, tax	0	2,402	10,895
Change in fair value of interest rate swap, tax	$ 840	$ 314	$ 0

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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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=114867106&loc=d3e640-108580

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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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 10A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669646-108580

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=114867106&loc=d3e640-108580

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Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan.

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Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Decrease (Increase) in Actuarial Loss, Tax

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Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Plan Amendment, Tax

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