Segment Information - Geographic Area Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2020	May 31, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 740	$ 4,838	$ 5,529	$ 9,511
North America
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	404	2,639	3,051	5,159
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	250	1,350	1,616	2,749
Australia and Asia
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	65	741	680	1,324
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 21	$ 108	$ 182	$ 279