Related Party Costs and Expenses [Text] (Details) (SAC Holdings, Four SAC, Five SAC, Galaxy, and Private Mini, USD $) In Millions, unless otherwise specified	12 Months Ended
	Mar. 31, 2013
SAC Holdings, Four SAC, Five SAC, Galaxy, and Private Mini
Related party costs and expenses:
Revenue, excluding dealer agreement commissions and expenses	$ 34.8
Revenue, generated by the dealer agreement from related parties	200.3
Commission expenses, generated from dealer agreement with related parties	43.8
Expenses, related parties	2.6
Cash flow, related party	$ 159.6