CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash Flows From Operating Activities:
Net income	$ 413	$ 416
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	927	926
Amortization of deferred financing costs and original issue discounts	7	8
Gain on sales of rental equipment	(146)	(164)
Gain on sales of non-rental equipment	(3)	(6)
Stock compensation expense, net	33	37
Merger related costs	0	(26)
Restructuring charge	8	1
Loss on repurchase/redemption of debt securities and amendment of ABL facility	36	123
Excess tax benefits from share-based payment arrangements	(53)	(57)
Increase in deferred taxes	90	94
Changes in operating assets and liabilities, net of amounts acquired:
Decrease (increase) in accounts receivable	7	(72)
Increase in inventory	(3)	0
Decrease in prepaid expenses and other assets	75	17
Increase in accounts payable	137	195
Increase in accrued expenses and other liabilities	102	65
Net cash provided by operating activities	1,630	1,557
Cash Flows From Investing Activities:
Purchases of other companies, net of cash acquired	(28)	(86)
Net cash used in investing activities	(865)	(1,192)
Cash Flows From Financing Activities:
Proceeds from debt	5,812	7,453
Payments of debt	(6,021)	(7,093)
Payment of contingent consideration	0	(52)
Proceeds from the exercise of common stock options	0	1
Common stock repurchased	(488)	(667)
Payments of financing costs	(12)	(27)
Excess tax benefits from share-based payment arrangements	53	57
Net cash used in financing activities	(656)	(328)
Effect of foreign exchange rates	9	(24)
Net increase in cash and cash equivalents	118	13
Cash and cash equivalents at beginning of period	179	158
Cash and cash equivalents at end of period	297	171
Supplemental disclosure of cash flow information:
Cash paid for income taxes, net	14	55
Cash paid for interest	294	304
Rental equipment
Cash Flows From Investing Activities:
Purchases of equipment	(1,145)	(1,425)
Proceeds from sales of equipment	361	381
Nonrental equipment
Cash Flows From Investing Activities:
Purchases of equipment	(65)	(76)
Proceeds from sales of equipment	$ 12	$ 14