Restructuring and Asset Impairment Charges (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended			72 Months Ended			72 Months Ended			24 Months Ended
	Dec. 31, 2013 General Rentals [Member]	Dec. 31, 2012 General Rentals [Member]	Dec. 31, 2011 General Rentals [Member]	Dec. 31, 2013 Closed Restructuring Program [Member]	Dec. 31, 2012 Closed Restructuring Program [Member] employees Locations	Dec. 31, 2007 Closed Restructuring Program [Member] employees Locations	Dec. 31, 2013 Closed Restructuring Program [Member] Branch closure charges [Member]	Dec. 31, 2013 Closed Restructuring Program [Member] Severance costs [Member]	Dec. 31, 2013 RSC Merger Related Restructuring Program [Member] employees Locations	Dec. 31, 2013 RSC Merger Related Restructuring Program [Member] RSC [Member]	Dec. 31, 2013 RSC Merger Related Restructuring Program [Member] RSC [Member] Branch closure charges [Member]	Dec. 31, 2013 RSC Merger Related Restructuring Program [Member] RSC [Member] Severance costs [Member]
Restructuring Cost and Reserve [Line Items]
Number of employees					7,500	10,900			11,850
Number of branch locations					529	697			832
Restructuring charges incurred to date				$ 110			$ 89	$ 21		$ 105	$ 60	$ 45
Asset impairment charges	$ 4	$ 15	$ 4