Restructuring Charges (Narrative) (Details)	Dec. 31, 2011 employee location	Jan. 01, 2008 location employee	Mar. 31, 2015 location employee
Closed Restructuring Program
Restructuring Cost and Reserve
Employee headcount	7,500	10,900
Number of locations	529	697
RSC Merger Related Restructuring Program
Restructuring Cost and Reserve
Employee headcount			12,500
Number of locations			888