Organization, Description Of Business And Consolidation (Details) (USD $)			1 Months Ended	0 Months Ended	1 Months Ended	0 Months Ended	1 Months Ended	0 Months Ended	3 Months Ended	1 Months Ended
	Mar. 31, 2012 RSC [Member]	Dec. 15, 2011 RSC [Member]	Mar. 31, 2012 5 3/4 percent Senior Secured Notes [Member]	Dec. 15, 2011 5 3/4 percent Senior Secured Notes [Member] Secured Debt [Member] RSC [Member]	Mar. 31, 2012 7 3/8 percent Senior Notes [Member]	Dec. 15, 2011 7 3/8 percent Senior Notes [Member] Unsecured Debt [Member] RSC [Member]	Mar. 31, 2012 7 5/8 percent Senior Notes [Member]	Dec. 15, 2011 7 5/8 percent Senior Notes [Member] Unsecured Debt [Member] RSC [Member]	Mar. 31, 2012 ABL Facility [Member] RSC [Member]	Mar. 31, 2012 Senior Secured Notes ten percent [Member] RSC [Member]	Mar. 31, 2012 Senior Notes nine point five percent [Member] RSC [Member]
Business Acquisition [Line Items]
Debt, stated interest rate			5.75%		7.375%		7.625%			10.00%	9.50%
Cost of acquired entity		$ 4,200,000,000
Total merger consideration		2,400,000,000
Cash consideration		1,200,000,000
Common stock consideration		1,200,000,000
Value of stock options and restricted stock units issued		69,000,000
Expected proceeds from debt issuance			725,000,000	750,000,000	722,000,000	750,000,000	1,281,000,000	1,325,000,000
Repayments of long-term debt									548,000,000	400,000,000	503,000,000
Amount of RSC debt assumed	$ 947,000,000