Condensed Consolidating Financial Information of Guarantor Subsidiaries - CONDENSED CONSOLIDATING STATEMENT OF INCOME AND COMPREHENSIVE INCOME (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Revenues:
Equipment rentals		$ 1,166	$ 1,117
Sales of rental equipment		106	115
Sales of new equipment		39	30
Contractor supplies sales		18	19
Service and other revenues		27	29
Total revenues		1,356	1,310
Cost of revenues:
Cost of equipment rentals, excluding depreciation		474	449
Depreciation of rental equipment		248	243
Cost of rental equipment sales		60	68
Cost of new equipment sales		34	25
Cost of contractor supplies sales		13	13
Cost of service and other revenues		13	12
Total cost of revenues		842	810
Gross profit		514	500
Selling, general and administrative expenses		193	177
Merger related costs		2	0
Restructuring charge		0	2
Non-rental depreciation and amortization		62	67
Operating income		257	254
Interest (income) expense, net		94	107
Other (income) expense, net		2	0
Income before provision for income taxes		161	147
Provision (benefit) for income taxes		52	55
Income (loss) before equity in net earnings (loss) of subsidiaries		109	92
Equity in net earnings (loss) of subsidiaries		0	0
Net income		109	92
Other comprehensive (loss) income		8	63
Comprehensive income	[1]	117	155
Eliminations
Revenues:
Equipment rentals		0	0
Sales of rental equipment		0	0
Sales of new equipment		0	0
Contractor supplies sales		0	0
Service and other revenues		0	0
Total revenues		0	0
Cost of revenues:
Cost of equipment rentals, excluding depreciation		0	0
Depreciation of rental equipment		0	0
Cost of rental equipment sales		0	0
Cost of new equipment sales		0	0
Cost of contractor supplies sales		0	0
Cost of service and other revenues		0	0
Total cost of revenues		0	0
Gross profit		0	0
Selling, general and administrative expenses		0	0
Merger related costs		0
Restructuring charge			0
Non-rental depreciation and amortization		0	0
Operating income		0	0
Interest (income) expense, net		(1)	(1)
Other (income) expense, net		0	0
Income before provision for income taxes		1	1
Provision (benefit) for income taxes		0	0
Income (loss) before equity in net earnings (loss) of subsidiaries		1	1
Equity in net earnings (loss) of subsidiaries		(46)	(40)
Net income		(45)	(39)
Other comprehensive (loss) income		(23)	(175)
Comprehensive income		(68)	(214)
Parent
Revenues:
Equipment rentals		0	0
Sales of rental equipment		0	0
Sales of new equipment		0	0
Contractor supplies sales		0	0
Service and other revenues		0	0
Total revenues		0	0
Cost of revenues:
Cost of equipment rentals, excluding depreciation		0	0
Depreciation of rental equipment		0	0
Cost of rental equipment sales		0	0
Cost of new equipment sales		0	0
Cost of contractor supplies sales		0	0
Cost of service and other revenues		0	0
Total cost of revenues		0	0
Gross profit		0	0
Selling, general and administrative expenses		23	6
Merger related costs		0
Restructuring charge			0
Non-rental depreciation and amortization		4	4
Operating income		(27)	(10)
Interest (income) expense, net		(2)	(2)
Other (income) expense, net		(112)	(106)
Income before provision for income taxes		87	98
Provision (benefit) for income taxes		21	37
Income (loss) before equity in net earnings (loss) of subsidiaries		66	61
Equity in net earnings (loss) of subsidiaries		43	31
Net income		109	92
Other comprehensive (loss) income		8	63
Comprehensive income		117	155
URNA
Revenues:
Equipment rentals		1,070	1,024
Sales of rental equipment		95	104
Sales of new equipment		35	27
Contractor supplies sales		16	17
Service and other revenues		24	25
Total revenues		1,240	1,197
Cost of revenues:
Cost of equipment rentals, excluding depreciation		423	404
Depreciation of rental equipment		227	221
Cost of rental equipment sales		54	62
Cost of new equipment sales		31	23
Cost of contractor supplies sales		12	12
Cost of service and other revenues		11	9
Total cost of revenues		758	731
Gross profit		482	466
Selling, general and administrative expenses		145	144
Merger related costs		2
Restructuring charge			2
Non-rental depreciation and amortization		52	57
Operating income		283	263
Interest (income) expense, net		93	106
Other (income) expense, net		124	122
Income before provision for income taxes		66	35
Provision (benefit) for income taxes		28	13
Income (loss) before equity in net earnings (loss) of subsidiaries		38	22
Equity in net earnings (loss) of subsidiaries		5	9
Net income		43	31
Other comprehensive (loss) income		8	63
Comprehensive income		51	94
Guarantor Subsidiaries
Revenues:
Equipment rentals		0	0
Sales of rental equipment		0	0
Sales of new equipment		0	0
Contractor supplies sales		0	0
Service and other revenues		0	0
Total revenues		0	0
Cost of revenues:
Cost of equipment rentals, excluding depreciation		0	0
Depreciation of rental equipment		0	0
Cost of rental equipment sales		0	0
Cost of new equipment sales		0	0
Cost of contractor supplies sales		0	0
Cost of service and other revenues		0	0
Total cost of revenues		0	0
Gross profit		0	0
Selling, general and administrative expenses		0	0
Merger related costs		0
Restructuring charge			0
Non-rental depreciation and amortization		0	0
Operating income		0	0
Interest (income) expense, net		1	1
Other (income) expense, net		0	0
Income before provision for income taxes		(1)	(1)
Provision (benefit) for income taxes		0	0
Income (loss) before equity in net earnings (loss) of subsidiaries		(1)	(1)
Equity in net earnings (loss) of subsidiaries		(2)	0
Net income		(3)	(1)
Other comprehensive (loss) income		8	62
Comprehensive income		5	61
Non Guarantor Subsidiaries - Foreign
Revenues:
Equipment rentals		96	93
Sales of rental equipment		11	11
Sales of new equipment		4	3
Contractor supplies sales		2	2
Service and other revenues		3	4
Total revenues		116	113
Cost of revenues:
Cost of equipment rentals, excluding depreciation		51	45
Depreciation of rental equipment		21	22
Cost of rental equipment sales		6	6
Cost of new equipment sales		3	2
Cost of contractor supplies sales		1	1
Cost of service and other revenues		2	3
Total cost of revenues		84	79
Gross profit		32	34
Selling, general and administrative expenses		17	19
Merger related costs		0
Restructuring charge			0
Non-rental depreciation and amortization		6	6
Operating income		9	9
Interest (income) expense, net		1	1
Other (income) expense, net		12	9
Income before provision for income taxes		(4)	(1)
Provision (benefit) for income taxes		(2)	(1)
Income (loss) before equity in net earnings (loss) of subsidiaries		(2)	0
Equity in net earnings (loss) of subsidiaries		0	0
Net income		(2)	0
Other comprehensive (loss) income		7	50
Comprehensive income		5	50
Non Guarantor Subsidiaries - SPV
Revenues:
Equipment rentals		0	0
Sales of rental equipment		0	0
Sales of new equipment		0	0
Contractor supplies sales		0	0
Service and other revenues		0	0
Total revenues		0	0
Cost of revenues:
Cost of equipment rentals, excluding depreciation		0	0
Depreciation of rental equipment		0	0
Cost of rental equipment sales		0	0
Cost of new equipment sales		0	0
Cost of contractor supplies sales		0	0
Cost of service and other revenues		0	0
Total cost of revenues		0	0
Gross profit		0	0
Selling, general and administrative expenses		8	8
Merger related costs		0
Restructuring charge			0
Non-rental depreciation and amortization		0	0
Operating income		(8)	(8)
Interest (income) expense, net		2	2
Other (income) expense, net		(22)	(25)
Income before provision for income taxes		12	15
Provision (benefit) for income taxes		5	6
Income (loss) before equity in net earnings (loss) of subsidiaries		7	9
Equity in net earnings (loss) of subsidiaries		0	0
Net income		7	9
Other comprehensive (loss) income		0	0
Comprehensive income		$ 7	$ 9

[1] There were no material reclassifications from accumulated other comprehensive loss reflected in other comprehensive income during 2017 or 2016. There is no tax impact related to the foreign currency translation adjustments, as the earnings are considered permanently reinvested. There were no material taxes associated with other comprehensive income during 2017 or 2016.