CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash Flows From Operating Activities:
Net income	$ 109	$ 92
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	310	310
Amortization of deferred financing costs and original issue discounts	2	2
Gain on sales of rental equipment	(46)	(47)
Gain on sales of non-rental equipment	(1)	(1)
Stock compensation expense, net	16	9
Merger related costs	2	0
Restructuring charge	0	2
Excess tax benefits from share-based payment arrangements	0	(27)
Increase in deferred taxes	10	25
Changes in operating assets and liabilities, net of amounts acquired:
Decrease in accounts receivable	65	103
Increase in inventory	(6)	(4)
Decrease in prepaid expenses and other assets	9	64
Increase in accounts payable	139	56
Increase in accrued expenses and other liabilities	14	20
Net cash provided by operating activities	623	604
Cash Flows From Investing Activities:
Purchases of other companies, net of cash acquired	0	(13)
Purchases of investments	(1)	0
Net cash used in investing activities	(134)	(17)
Cash Flows From Financing Activities:
Proceeds from debt	1,502	914
Payments of debt	(1,939)	(1,337)
Proceeds from the exercise of common stock options	1	0
Common stock repurchased	(23)	(164)
Payments of financing costs	(7)	0
Excess tax benefits from share-based payment arrangements	0	27
Net cash used in financing activities	(466)	(560)
Effect of foreign exchange rates	2	13
Net increase in cash and cash equivalents	25	40
Cash and cash equivalents at beginning of period	312	179
Cash and cash equivalents at end of period	337	219
Supplemental disclosure of cash flow information:
Cash paid (received) for income taxes, net	1	(53)
Cash paid for interest	90	69
Rental equipment
Cash Flows From Investing Activities:
Purchases of equipment	(219)	(100)
Proceeds from sales of equipment	106	115
Nonrental equipment
Cash Flows From Investing Activities:
Purchases of equipment	(22)	(23)
Proceeds from sales of equipment	$ 2	$ 4