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Benefit Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Nov. 30, 2018	Dec. 01, 2017	Dec. 02, 2016
Retirement Benefits [Abstract]
Percentage of employer matching contribution to retirement savings plan	50.00%
Defined Contribution Plan, Employer Matching Contribution, Percent	6.00%
Percentage of eligible employee contribution to retirement savings plan	65.00%
Employer's conribution to retirement savings plan	$ 41.0	$ 34.3	$ 33.4
Board of Directors and Certain Executives [Member]
Deferred Compensation Plan for certain executives and Board of Director Members [Line Items]
Percentage of contribution made by participants of base salary to deferred compensation plan	75.00%
Percentage of contribution made by participants of other specified compensation to deferred compensation plan	100.00%
Minimum period after end of plan year participants can elect to begin benefit payments	3 years
Payment period for annual installments election of benefit payments	over five, ten or fifteen years
Deferred compensation plan assets	$ 69.0	56.7
Deferred compensation plan liabilities	$ 84.0	$ 67.2

X

- Definition

Deferred Compensation Arrangement, Participant Election of Benefit Payments, Annual Installments Option Payment Period

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- Definition

Deferred Compensation Arrangement, Participant Election of Benefit Payments Start Date, Minimum Period after End of Plan Year

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- Definition

Percentage of contribution made by participants of base salary to deferred compensation plan.

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Percentage of contribution made by participants of other specified compensation to deferred compensation plan.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements payable beyond one year (or the operating cycle, if longer).

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- Definition

Carrying amount as of the balance sheet date of assets held under deferred compensation agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
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- Definition

Amount of cost for defined contribution plan.

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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

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Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

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Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan.

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