Revenue and Expense Recognition (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Aug. 31, 2022	Aug. 31, 2021	Aug. 31, 2022	Aug. 31, 2021	Nov. 30, 2021
Revenue from Contract with Customer [Abstract]
Fees, taxes, and charges	$ 141	$ 16	$ 305	$ 28
Customer deposits	4,800		4,800		$ 3,500
Revenues recognized related to customer deposits at beginning of period			1,700	$ 1,700
Contract assets	$ 191		$ 191		$ 55