Related Party Costs and Expenses [Text] (Details) (SAC Holdings, Four SAC, Five SAC, Galaxy, and Private Mini, USD $) In Millions, unless otherwise specified	6 Months Ended
	Sep. 30, 2013
SAC Holdings, Four SAC, Five SAC, Galaxy, and Private Mini
Related party costs and expenses:
Revenue, excluding dealer agreement commissions and expenses	$ 15.8
Revenue, generated by the dealer agreement from related parties	131.1
Commission expenses, generated from dealer agreement with related parties	28.6
Expenses, related parties	1.3
Cash flow, related party	$ 29.3