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Earnings Per Share (Narrative) (Details)		12 Months Ended
	Jan. 29, 2013 shares	Nov. 30, 2018 shares	Nov. 30, 2017 shares	Nov. 30, 2016 shares	Nov. 30, 2013
Debt Instrument [Line Items]
Conversion rate			0.0365297		0.0365297
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		800,000	1,600,000	7,300,000
Convertible senior notes due February 1, 2019 at 1.375%
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	1.375%	1.375%
Convertible Notes Payable [Member] | Convertible senior notes due February 1, 2019 at 1.375%
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		1.375%	1.375%
Debt Conversion, Converted Instrument, Shares Issued	36.5297

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

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Contractual interest rate for funds borrowed, under the debt agreement.

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