CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash Flows From Operating Activities:
Net income	$ 250	$ 226
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	640	616
Amortization of deferred financing costs and original issue discounts	4	4
Gain on sales of rental equipment	(98)	(102)
Gain on sales of non-rental equipment	(3)	(1)
Stock compensation expense, net	40	22
Merger related costs	16	0
Restructuring charge	19	4
Loss on repurchase/redemption of debt securities and amendment of ABL facility	12	26
Excess tax benefits from share-based payment arrangements	0	(53)
Increase in deferred taxes	40	69
Changes in operating assets and liabilities, net of amounts acquired:
(Increase) decrease in accounts receivable	(16)	68
Increase in inventory	(5)	(2)
(Increase) decrease in prepaid expenses and other assets	(7)	64
Increase in accounts payable	429	337
Increase (decrease) in accrued expenses and other liabilities	16	(31)
Net cash provided by operating activities	1,337	1,247
Cash Flows From Investing Activities:
Purchases of other companies, net of cash acquired	(965)	(14)
Purchases of investments	(4)	0
Net cash used in investing activities	(1,692)	(522)
Cash Flows From Financing Activities:
Proceeds from debt	3,943	3,964
Payments of debt	(3,543)	(4,320)
Proceeds from the exercise of common stock options	1	0
Common stock repurchased	(24)	(336)
Payments of financing costs	(7)	(12)
Excess tax benefits from share-based payment arrangements	0	53
Net cash provided by (used in) financing activities	370	(651)
Effect of foreign exchange rates	11	12
Net (decrease) increase in cash and cash equivalents	26	86
Cash and cash equivalents at beginning of period	312	179
Cash and cash equivalents at end of period	338	265
Supplemental disclosure of cash flow information:
Cash paid for income taxes, net	59	3
Cash paid for interest	177	219
Rental equipment
Cash Flows From Investing Activities:
Purchases of equipment	(913)	(722)
Proceeds from sales of equipment	239	249
Non-rental equipment
Cash Flows From Investing Activities:
Purchases of equipment	(55)	(42)
Proceeds from sales of equipment	$ 6	$ 7