Basis of Presentation and Significant Accounting Policies (Narratives) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Aug. 31, 2017	Aug. 31, 2016	Aug. 31, 2017	Aug. 31, 2016	Nov. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Cash equivalents	$ 306.1		$ 306.1		$ 396.1
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 50.2	$ 39.4	$ 96.2	$ 68.1

Amount of short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.1)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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