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Employee Benefit Plans - Narrative (Details) $ in Millions	3 Months Ended		9 Months Ended
	May 30, 2020 USD ($) Retirement-Plan	May 25, 2019 USD ($)	May 30, 2020 USD ($) Retirement-Plan	May 25, 2019 USD ($)
Postemployment Benefits [Abstract]
Contributions charged to expense under the plan	$ 1.9	$ 5.8	$ 12.4	$ 14.6
Number of frozen non-contributory defined benefit pension plans | Retirement-Plan	2		2
Amounts charged to expense related to the plans	$ 0.7	$ 0.5	$ 0.7	$ 1.6

X

- Definition

Defined Benefit Plan, Number Of Frozen Plans

+ References

No definition available.

+ Details

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X

- Definition

Amount of cost for defined contribution plan.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 70
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942

+ Details

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X

- Definition

Amount of cost (reversal of cost) for pension benefits. Excludes other postretirement benefits.

+ References

No definition available.

+ Details

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X

- References

No definition available.

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