CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash flows from operating activities:
Net income	$ 2,016	$ 2,386	$ 3,588
Adjustments to reconcile net income to net cash generated from operating activities:
Depreciation and amortization	1,111	999	1,031
Amortization of leasehold interests in land	38	39	41
Amortization of deferred financing costs and original issue discount	44	44	51
Amortization of deferred gain on and rent from mall sale transactions	(4)	(4)	(4)
Non-cash change in deferred proceeds from sale of The Shoppes at The Palazzo	0	1	1
Non-cash loss on modification or early retirement of debt	2	0	15
Loss on disposal or impairment of assets	79	35	7
Stock-based compensation expense	34	46	48
Provision for doubtful accounts	173	156	187
Foreign exchange gain	(21)	(21)	(12)
Excess tax benefits from stock-based compensation	(1)	(9)	(4)
Deferred income taxes	24	19	(3)
Changes in operating assets and liabilities:
Accounts receivable	319	49	37
Other assets	(36)	6	(30)
Accounts payable	19	(1)	(5)
Other liabilities	246	(295)	(115)
Net cash generated from operating activities	4,043	3,450	4,833
Cash flows from investing activities:
Change in restricted cash and cash equivalents	(2)	(1)	0
Capital expenditures	(1,398)	(1,529)	(1,179)
Proceeds from disposal of property and equipment	5	2	2
Acquisition of intangible assets	(47)	0	0
Net cash used in investing activities	(1,442)	(1,528)	(1,177)
Cash flows from financing activities:
Proceeds from exercise of stock options	17	17	56
Excess tax benefits from stock-based compensation	1	9	4
Repurchase of common stock	0	(205)	(1,677)
Dividends paid	(2,909)	(2,693)	(2,387)
Distributions to noncontrolling interests	(15)	(14)	(10)
Proceeds from long-term debt (Note 8)	2,296	2,089	2,498
Repayments of long-term debt (Note 8)	(1,987)	(2,398)	(2,117)
Payments of deferred financing costs	(33)	(12)	(88)
Net cash used in financing activities	(2,630)	(3,207)	(3,721)
Effect of exchange rate on cash	(22)	(42)	(29)
Decrease in cash and cash equivalents	(51)	(1,327)	(94)
Cash and cash equivalents at beginning of year	2,179	3,506	3,600
Cash and cash equivalents at end of year	$ 2,128	$ 2,179	$ 3,506