Segment Information - Geographic Area Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Aug. 31, 2019	Aug. 31, 2018	Aug. 31, 2019	Aug. 31, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 6,533	$ 5,836	$ 16,043	$ 14,425
North America
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	3,751		8,910
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,738		4,486
Australia and Asia
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	937		2,261
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 107		$ 385