Earnings Per Share and Stock Issuances-Common Stock Activity (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended
Feb. 29, 2016	Feb. 28, 2015
Employee Stock Purchase Plan [Line Items]
Stock Repurchase Program, Authorized Amount	$ 600
Stock Options And Restricted Stock Units [Member]
Employee Stock Purchase Plan [Line Items]
Shares issued under stock option, employee stock purchase plans and RSUs	0.1	0.3
Share Repurchase Program [Member]
Employee Stock Purchase Plan [Line Items]
Stock Repurchased During Period, Shares	0.6	0.9

Number of shares (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of any shares forfeited. Shares issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30
-Article 5

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration