Condensed Consolidating Financial Information of Guarantor Subsidiaries CONDENSED CONSOLIDATING STATEMENT OF INCOME AND COMPREHENSIVE INCOME (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012		Jun. 30, 2013		Jun. 30, 2012
Revenues:
Equipment rentals	$ 1,009	$ 845		$ 1,925		$ 1,368
Sales of rental equipment	131	81		254		157
Sales of new equipment	24	22		45		40
Contractor supplies sales	23	23		43		41
Service and other revenues	19	22		39		43
Total revenues	1,206	993		2,306		1,649
Cost of revenues:
Cost of equipment rentals, excluding depreciation	399	350		792		596
Depreciation of rental equipment	208	172		410		287
Cost of rental equipment sales	87	56		170		103
Cost of new equipment sales	19	17		36		32
Cost of contractor supplies sales	16	16		29		28
Cost of service and other revenues	6	8		13		16
Total cost of revenues	735	619		1,450		1,062
Gross profit	471	374		856		587
Selling, general and administrative expenses	152	146		312		248
RSC merger related costs	2	80		8		90
Restructuring charge	5	53		11	[1]	53
Non-rental depreciation and amortization	62	49		126		63
Operating income	250	46		399		133
Interest expense (income), net	118	121		236		189
Interest expense-subordinated convertible debentures	1	1		3		2
Other (income) expense, net	0	(12)		(1)		(13)
Income (loss) before provision (benefit) for income taxes	131	(64)		161		(45)
Provision (benefit) for income taxes	48	(12)		57		(6)
Income (loss) before equity in net (loss) earnings of subsidiaries	83	(52)		104		(39)
Equity in net earnings (loss) of subsidiaries	0	0		0		0
Net income (loss)	83	(52)		104		(39)
Other comprehensive (loss) income	(32)	(12)		(52)		(2)
Comprehensive income (loss)	51	(64)		52		(41)
Parent [Member]
Revenues:
Equipment rentals	0	0		0		0
Sales of rental equipment	0	0		0		0
Sales of new equipment	0	0		0		0
Contractor supplies sales	0	0		0		0
Service and other revenues	0	0		0		0
Total revenues	0	0		0		0
Cost of revenues:
Cost of equipment rentals, excluding depreciation	0	0		0		0
Depreciation of rental equipment	0	0		0		0
Cost of rental equipment sales	0	0		0		0
Cost of new equipment sales	0	0		0		0
Cost of contractor supplies sales	0	0		0		0
Cost of service and other revenues	0	0		0		0
Total cost of revenues	0	0		0		0
Gross profit	0	0		0		0
Selling, general and administrative expenses	(10)	9		9		19
RSC merger related costs	0	0		0		0
Restructuring charge	0	0		0		0
Non-rental depreciation and amortization	4	3		8		7
Operating income	6	(12)		(17)		(26)
Interest expense (income), net	4	3		6		6
Interest expense-subordinated convertible debentures	1	1		3		2
Other (income) expense, net	(35)	(20)		(65)		(38)
Income (loss) before provision (benefit) for income taxes	36	4		39		4
Provision (benefit) for income taxes	8	1		9		1
Income (loss) before equity in net (loss) earnings of subsidiaries	28	3		30		3
Equity in net earnings (loss) of subsidiaries	55	(55)		74		(42)
Net income (loss)	83	(52)		104		(39)
Other comprehensive (loss) income	(32)	(12)		(52)		(2)
Comprehensive income (loss)	51	(64)		52		(41)
URNA [Member]
Revenues:
Equipment rentals	870	665		1,651		915
Sales of rental equipment	116	66		228		105
Sales of new equipment	18	13		34		21
Contractor supplies sales	18	16		34		24
Service and other revenues	16	14		31		25
Total revenues	1,038	774		1,978		1,090
Cost of revenues:
Cost of equipment rentals, excluding depreciation	336	272		669		387
Depreciation of rental equipment	184	136		362		195
Cost of rental equipment sales	78	47		154		71
Cost of new equipment sales	14	10		27		17
Cost of contractor supplies sales	13	12		23		16
Cost of service and other revenues	4	4		10		10
Total cost of revenues	629	481		1,245		696
Gross profit	409	293		733		394
Selling, general and administrative expenses	138	104		256		138
RSC merger related costs	2	80		8		90
Restructuring charge	5	52		11		52
Non-rental depreciation and amortization	53	41		108		45
Operating income	211	16		350		69
Interest expense (income), net	112	68		226		119
Interest expense-subordinated convertible debentures	0	0		0		0
Other (income) expense, net	48	14		93		30
Income (loss) before provision (benefit) for income taxes	51	(66)		31		(80)
Provision (benefit) for income taxes	27	(3)		19		(25)
Income (loss) before equity in net (loss) earnings of subsidiaries	24	(63)		12		(55)
Equity in net earnings (loss) of subsidiaries	31	8		62		13
Net income (loss)	55	(55)		74		(42)
Other comprehensive (loss) income	(32)	(12)		(52)		(2)
Comprehensive income (loss)	23	(67)		22		(44)
Guarantor Subsidiaries [Member]
Revenues:
Equipment rentals	0	66		0		249
Sales of rental equipment	0	6		0		32
Sales of new equipment	0	2		0		7
Contractor supplies sales	0	2		0		7
Service and other revenues	0	3		0		8
Total revenues	0	79		0		303
Cost of revenues:
Cost of equipment rentals, excluding depreciation	0	29		0		117
Depreciation of rental equipment	0	13		0		50
Cost of rental equipment sales	0	4		0		20
Cost of new equipment sales	0	2		0		6
Cost of contractor supplies sales	0	1		0		5
Cost of service and other revenues	0	1		0		3
Total cost of revenues	0	50		0		201
Gross profit	0	29		0		102
Selling, general and administrative expenses	0	11		0		47
RSC merger related costs	0	0		0		0
Restructuring charge	0	0		0		0
Non-rental depreciation and amortization	0	1		0		5
Operating income	0	17		0		50
Interest expense (income), net	2	32		3		33
Interest expense-subordinated convertible debentures	0	0		0		0
Other (income) expense, net	0	0		0		9
Income (loss) before provision (benefit) for income taxes	(2)	(15)		(3)		8
Provision (benefit) for income taxes	0	(11)		0		17
Income (loss) before equity in net (loss) earnings of subsidiaries	(2)	(4)		(3)		(9)
Equity in net earnings (loss) of subsidiaries	21	19		42		33
Net income (loss)	19	15		39		24
Other comprehensive (loss) income	(32)	(10)		(52)		(1)
Comprehensive income (loss)	(13)	5		(13)		23
Non Guarantor Subsidiaries Foreign [Member]
Revenues:
Equipment rentals	139	114		274		204
Sales of rental equipment	15	9		26		20
Sales of new equipment	6	7		11		12
Contractor supplies sales	5	5		9		10
Service and other revenues	3	5		8		10
Total revenues	168	140		328		256
Cost of revenues:
Cost of equipment rentals, excluding depreciation	63	49		123		92
Depreciation of rental equipment	24	23		48		42
Cost of rental equipment sales	9	5		16		12
Cost of new equipment sales	5	5		9		9
Cost of contractor supplies sales	3	3		6		7
Cost of service and other revenues	2	3		3		3
Total cost of revenues	106	88		205		165
Gross profit	62	52		123		91
Selling, general and administrative expenses	23	17		45		34
RSC merger related costs	0	0		0		0
Restructuring charge	0	1		0		1
Non-rental depreciation and amortization	5	4		10		6
Operating income	34	30		68		50
Interest expense (income), net	0	1		1		2
Interest expense-subordinated convertible debentures	0	0		0		0
Other (income) expense, net	6	4		9		7
Income (loss) before provision (benefit) for income taxes	28	25		58		41
Provision (benefit) for income taxes	7	6		16		9
Income (loss) before equity in net (loss) earnings of subsidiaries	21	19		42		32
Equity in net earnings (loss) of subsidiaries	0	0		0		0
Net income (loss)	21	19		42		32
Other comprehensive (loss) income	(25)	(6)		(40)		(1)
Comprehensive income (loss)	(4)	13		2		31
Non Guarantor Subsidiaries SPV [Member]
Revenues:
Equipment rentals	0	0	[2]	0	[2]	0	[2]
Sales of rental equipment	0	0	[2]	0	[2]	0	[2]
Sales of new equipment	0	0	[2]	0	[2]	0	[2]
Contractor supplies sales	0	0	[2]	0	[2]	0	[2]
Service and other revenues	0	0	[2]	0	[2]	0	[2]
Total revenues	0	0	[2]	0	[2]	0	[2]
Cost of revenues:
Cost of equipment rentals, excluding depreciation	0	0	[2]	0	[2]	0	[2]
Depreciation of rental equipment	0	0	[2]	0	[2]	0	[2]
Cost of rental equipment sales	0	0	[2]	0	[2]	0	[2]
Cost of new equipment sales	0	0	[2]	0	[2]	0	[2]
Cost of contractor supplies sales	0	0	[2]	0	[2]	0	[2]
Cost of service and other revenues	0	0	[2]	0	[2]	0	[2]
Total cost of revenues	0	0	[2]	0	[2]	0	[2]
Gross profit	0	0	[2]	0	[2]	0	[2]
Selling, general and administrative expenses	1	5	[2]	2	[2]	10	[2]
RSC merger related costs	0	0	[2]	0	[2]	0	[2]
Restructuring charge	0	0	[2]	0	[2]	0	[2]
Non-rental depreciation and amortization	0	0	[2]	0	[2]	0	[2]
Operating income	(1)	(5)	[2]	(2)	[2]	(10)	[2]
Interest expense (income), net	1	18	[2]	2	[2]	31	[2]
Interest expense-subordinated convertible debentures	0	0	[2]	0	[2]	0	[2]
Other (income) expense, net	(19)	(10)	[2]	(38)	[2]	(21)	[2]
Income (loss) before provision (benefit) for income taxes	17	(13)	[2]	34	[2]	(20)	[2]
Provision (benefit) for income taxes	6	(5)	[2]	13	[2]	(8)	[2]
Income (loss) before equity in net (loss) earnings of subsidiaries	11	(8)	[2]	21	[2]	(12)	[2]
Equity in net earnings (loss) of subsidiaries	0	0	[2]	0	[2]	0	[2]
Net income (loss)	11	(8)	[2]	21	[2]	(12)	[2]
Other comprehensive (loss) income	0	0	[2]	0	[2]	0	[2]
Comprehensive income (loss)	11	(8)	[2]	21	[2]	(12)	[2]
Eliminations [Member]
Revenues:
Equipment rentals	0	0		0		0
Sales of rental equipment	0	0		0		0
Sales of new equipment	0	0		0		0
Contractor supplies sales	0	0		0		0
Service and other revenues	0	0		0		0
Total revenues	0	0		0		0
Cost of revenues:
Cost of equipment rentals, excluding depreciation	0	0		0		0
Depreciation of rental equipment	0	0		0		0
Cost of rental equipment sales	0	0		0		0
Cost of new equipment sales	0	0		0		0
Cost of contractor supplies sales	0	0		0		0
Cost of service and other revenues	0	0		0		0
Total cost of revenues	0	0		0		0
Gross profit	0	0		0		0
Selling, general and administrative expenses	0	0		0		0
RSC merger related costs	0	0		0		0
Restructuring charge	0	0		0		0
Non-rental depreciation and amortization	0	0		0		0
Operating income	0	0		0		0
Interest expense (income), net	(1)	(1)		(2)		(2)
Interest expense-subordinated convertible debentures	0	0		0		0
Other (income) expense, net	0	0		0		0
Income (loss) before provision (benefit) for income taxes	1	1		2		2
Provision (benefit) for income taxes	0	0		0		0
Income (loss) before equity in net (loss) earnings of subsidiaries	1	1		2		2
Equity in net earnings (loss) of subsidiaries	(107)	28		(178)		(4)
Net income (loss)	(106)	29		(176)		(2)
Other comprehensive (loss) income	89	28		144		4
Comprehensive income (loss)	$ (17)	$ 57		$ (32)		$ 2

[1] Reflected in our condensed consolidated statements of income as “Restructuring charge.” These charges are not allocated to our reportable segments.

[2] Includes interest expense prior to the April 30, 2012 RSC acquisition date on debt issued in connection with the RSC acquisition discussed in note 1 to our condensed consolidated financial statements.