Debt Debt (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Dec. 31, 2013	Mar. 31, 2013	Sep. 30, 2013
Debt [Abstract]
Interest Payable			$ 11.6
Early Repayment of Senior Debt	12.0	0.6
Debt Instrument, Repurchased Face Amount		0.6
Debt Instrument, Repurchase Amount		0.6
Proceeds from (Repayments of) Debt		$ 0