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	$ 566	$ 585	$ 540
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,245	1,244	1,194
Amortization of deferred financing costs and original issue discounts	9	10	17
Gain on sales of rental equipment	(204)	(227)	(229)
Gain on sales of non-rental equipment	(4)	(8)	(11)
Stock compensation expense, net	45	49	74
Merger related costs	0	(26)	11
Restructuring charge	14	6	(1)
Loss on repurchase/redemption of debt securities and amendment of ABL facility	101	123	80
Excess tax benefits from share-based payment arrangements	(58)	(5)	0
Increase in deferred taxes	123	336	261
Changes in operating assets and liabilities:
Decrease (increase) in accounts receivable	15	(11)	(101)
Decrease in inventory	1	8	11
Decrease (increase) in prepaid expenses and other assets	77	(38)	(52)
Decrease in accounts payable	(29)	(8)	(23)
Increase (decrease) in accrued expenses and other liabilities	52	(43)	30
Net cash provided by operating activities	1,953	1,995	1,801
Cash Flows From Investing Activities:
Purchases of rental equipment	(1,246)	(1,534)	(1,701)
Purchases of non-rental equipment	(93)	(102)	(120)
Proceeds from sales of rental equipment	496	538	544
Proceeds from sales of non-rental equipment	14	17	33
Purchases of other companies, net of cash acquired	(28)	(86)	(756)
Purchases of investments	(2)	(3)	0
Net cash used in investing activities	(859)	(1,170)	(2,000)
Cash Flows From Financing Activities:
Proceeds from debt	8,752	8,566	7,070
Payments of debt	(9,223)	(8,482)	(6,283)
Payment of contingent consideration	0	(52)	0
Payments of financing costs	(24)	(27)	(22)
Proceeds from the exercise of common stock options	1	1	2
Common stock repurchased	(528)	(789)	(613)
Cash received in connection with the 4 percent Convertible Senior Notes and related hedge, net	0	3	42
Excess tax benefits from share-based payment arrangements	58	5	0
Net cash (used in) provided by financing activities	(964)	(775)	196
Effect of foreign exchange rates	3	(29)	(14)
Net increase (decrease) in cash and cash equivalents	133	21	(17)
Cash and cash equivalents at beginning of year	179	158	175
Cash and cash equivalents at end of year	312	179	158
Supplemental disclosure of cash flow information:
Cash paid for interest	415	447	457
Cash paid for income taxes, net	$ 99	$ 60	$ 100