Other Assets (Details) - Grand Bahama Shipyard Ltd. - USD ($) $ in Millions	12 Months Ended
Nov. 30, 2017	Nov. 30, 2016	Nov. 30, 2015
Schedule of Equity Method Investments [Line Items]
Noncontrolling interest percentage	40.00%
Services provided	$ 97	$ 58	$ 33

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571

Name:	us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant