Restructuring and Asset Impairment Charges (Schedule Of Restructuring Charges) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Restructuring Reserve [Roll Forward]
Beginning Reserve Balance	$ 35	[1]
Charged to Costs and Expenses	(1)		12		99
Ending Reserve Balance	20	[1]	35	[1]
Closed Restructuring Program
Restructuring Reserve [Roll Forward]
Beginning Reserve Balance	13		19		28
Charged to Costs and Expenses	0	[2]	3	[2]	3	[2]
Payments and Other	(4)		(9)		(12)
Ending Reserve Balance	9		13		19
Closed Restructuring Program | Branch closure charges
Restructuring Reserve [Roll Forward]
Beginning Reserve Balance	13		19		27
Charged to Costs and Expenses	0	[2]	3	[2]	3	[2]
Payments and Other	(4)		(9)		(11)
Ending Reserve Balance	9		13		19
Closed Restructuring Program | Severance costs
Restructuring Reserve [Roll Forward]
Beginning Reserve Balance	0		0		1
Charged to Costs and Expenses	0	[2]	0	[2]	0	[2]
Payments and Other	0		0		(1)
Ending Reserve Balance	0		0		0
RSC Merger Related Restructuring Program
Restructuring Reserve [Roll Forward]
Beginning Reserve Balance	22		42		0
Charged to Costs and Expenses	(1)	[3]	9	[3]	96	[3]
Payments and Other	(10)		(29)		(54)
Ending Reserve Balance	11		22		42
RSC Merger Related Restructuring Program | Branch closure charges
Restructuring Reserve [Roll Forward]
Beginning Reserve Balance	20		33		0
Charged to Costs and Expenses	(1)	[3]	7	[3]	53	[3]
Payments and Other	(8)		(20)		(20)
Ending Reserve Balance	11		20		33
RSC Merger Related Restructuring Program | Severance costs
Restructuring Reserve [Roll Forward]
Beginning Reserve Balance	2		9		0
Charged to Costs and Expenses	0	[3]	2	[3]	43	[3]
Payments and Other	(2)		(9)		(34)
Ending Reserve Balance	$ 0		$ 2		$ 9

[1] Relates to branch closure charges and severance costs. See note 5 (“Restructuring and Asset Impairment Charges”) for additional detail.

[2] Reflected in our consolidated statements of income as “Restructuring charge.” The restructuring charges are not allocated to our segments.

[3] Reflected in our consolidated statements of income as “Restructuring charge.” The income for the year ended December 31, 2014 primarily reflects buyouts or settlements of real estate leases for less than the recognized reserves. The restructuring charges are not allocated to our segments.