Supplemental Cash Flow Information (Details) - USD ($)	6 Months Ended
	May 31, 2020	May 31, 2019	Nov. 30, 2019	Nov. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Cash and cash equivalents (Consolidated Balance Sheets)	$ 6,881,000,000		$ 518,000,000
Restricted cash included in prepaid expenses and other and other assets	15,000,000		13,000,000
Total cash, cash equivalents and restricted cash (Consolidated Statements of Cash Flows)	6,896,000,000	$ 1,215,000,000	$ 530,000,000	$ 996,000,000
Proceeds from sale of notes receivable	$ 0	$ 104,000,000