Share-Based Payments (Compensation Expense, Share-Based Payment Awards) (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended	6 Months Ended
May 31, 2017	May 31, 2016	May 31, 2017	May 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested shares granted (in shares)	0.0	0.0	0.0	0.0
Nonvested shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense for share-based awards	$ 12.3	$ 11.1	$ 24.8	$ 22.3

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration