Related Party Costs and Expenses [Text] (Details) (SAC Holdings, Four SAC, Five SAC, Galaxy, and Private Mini, USD $) In Millions, unless otherwise specified	3 Months Ended
	Jun. 30, 2012
SAC Holdings, Four SAC, Five SAC, Galaxy, and Private Mini
Related party costs and expenses:
Revenue, excluding dealer agreement commissions and expenses	$ 8.2
Revenue, generated by the dealer agreement from related parties	53.1
Commission expenses, generated from dealer agreement with related parties	11.6
Expenses, related parties	0.7
Cash flow, related party	$ 138.4