Stock Benefit Plans And Stock-Based Compensation (Summary Of Nonvested Stock Awards) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Nov. 30, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total Number of Shares Underlying Stock Awards, Nonvested at November 30, 2010	10,065
Total Number of Shares Underlying Stock Awards, Granted	1,818
Total Number of Shares Underlying Stock Awards, Vested	(2,182)
Total Number of Shares Underlying Stock Awards, Forfeited	(489)
Total Number of Shares Underlying Stock Awards, Nonvested at November 30, 2011	9,212
Weighted-Average Grant Date Fair Value, Nonvested at November 30, 2010	$ 9.47
Weighted-Average Grant Date Fair Value, Granted	$ 26.51
Weighted-Average Grant Date Fair Value, Vested	$ 8.68
Weighted-Average Grant Date Fair Value, Forfeited	$ 13.51
Weighted-Average Grant Date Fair Value, Nonvested at November 30, 2011	$ 12.71
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total Number of Shares Underlying Stock Awards, Nonvested at November 30, 2010	4,314
Total Number of Shares Underlying Stock Awards, Granted	1,184
Total Number of Shares Underlying Stock Awards, Vested	(1,687)
Total Number of Shares Underlying Stock Awards, Forfeited	(368)
Total Number of Shares Underlying Stock Awards, Nonvested at November 30, 2011	3,443
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total Number of Shares Underlying Stock Awards, Nonvested at November 30, 2010	1,659
Total Number of Shares Underlying Stock Awards, Granted	360
Total Number of Shares Underlying Stock Awards, Vested	(495)
Total Number of Shares Underlying Stock Awards, Forfeited	(101)
Total Number of Shares Underlying Stock Awards, Nonvested at November 30, 2011	1,423
Performance-Based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total Number of Shares Underlying Stock Awards, Nonvested at November 30, 2010	4,092
Total Number of Shares Underlying Stock Awards, Granted	274
Total Number of Shares Underlying Stock Awards, Forfeited	(20)
Total Number of Shares Underlying Stock Awards, Nonvested at November 30, 2011	4,346

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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- Definition

The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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