Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Feb. 28, 2018	Feb. 28, 2017
OPERATING ACTIVITIES
Net income	$ 391	$ 352
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	488	439
Gains on fuel derivatives, net	(16)	(27)
Share-based compensation	18	20
Other, net	24	20
Adjustments to reconcile net income to net cash provided by operating activities	904	804
Changes in operating assets and liabilities
Receivables	(30)	(2)
Inventories	1	(35)
Prepaid expenses and other	98	(10)
Accounts payable	19	(47)
Accrued liabilities and other	(198)	3
Customer deposits	271	219
Net cash provided by operating activities	1,064	932
INVESTING ACTIVITIES
Purchases of property and equipment	(574)	(412)
Payments of fuel derivative settlements	(21)	(52)
Other, net	4	(10)
Net cash used in investing activities	(591)	(474)
FINANCING ACTIVITIES
Proceeds from (repayments of) short-term borrowings, net	611	(289)
Principal repayments of long-term debt	(963)	(101)
Proceeds from issuance of long-term debt	469	100
Dividends paid	(323)	(254)
Purchases of treasury stock	(218)	(69)
Other, net	(4)	(2)
Net cash used in financing activities	(428)	(615)
Effect of exchange rate changes on cash and cash equivalents	12	(9)
Net increase (decrease) in cash and cash equivalents	58	(166)
Cash and cash equivalents at beginning of period	395	603
Cash and cash equivalents at end of period	$ 453	$ 437