Variable Interest and Affiliates (Details) In Millions, unless otherwise specified	1 Months Ended	12 Months Ended									12 Months Ended		12 Months Ended
	May 31, 2007 USD ($)	Sep. 30, 2013 USD ($) JointVenture	Sep. 30, 2012 USD ($)	Sep. 30, 2011 USD ($)	Sep. 30, 2011 Convertible Notes [Member] USD ($)	Sep. 30, 2010 Convertible Notes [Member] USD ($)	Sep. 30, 2008 Convertible Notes [Member] USD ($)	May 31, 2012 Convertible Notes [Member] USD ($)	Sep. 30, 2010 Convertible Notes [Member] HKD	May 31, 2007 Convertible Notes [Member] USD ($)	Sep. 30, 2013 Due September 27, 2011 [Member] Installment	Sep. 30, 2012 Due September 27, 2011 [Member] USD ($)	Sep. 30, 2013 Latin America Distributor [Member] USD ($)	Sep. 30, 2012 Latin America Distributor [Member] USD ($)	Sep. 30, 2013 Latin America Distributor [Member] Note financing provided for operating costs [Member] USD ($)	Sep. 30, 2013 Latin America Distributor [Member] Contract financing under a revolving line [Member] USD ($)
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net		$ 48.6	$ 58.9
Revenues		2,341.6	2,150.7	1,957.0									11.1	4.4
Credit obligation															0.5	13.0
Financing Receivable, Net													11.3
Notes, Loans and Financing Receivable, Net, Current		229.3	218.2										8.6
Notes, Loans and Financing Receivable, Net, Noncurrent		165.6	139.3										2.7
Available-for-sale Securities, Debt Securities						21.4			166.3	72.0
Outstanding ordinary shares of CLS	33.6
Percentage of shares of CLS (in hundredths)	5.00%
Maturity date of zero-coupon unsecured convertible note	May 31, 2015
Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities						39.8
Available-for-sale securities, gross realized gains (losses), sale proceeds					16.5
Convertible Notes Receivable Installments								9.2				12.2
Available-for-sale Securities, Gross Realized Losses		20.5			4.3		21.4
Number of installment											2
Number of joint ventures		2
Impairment gains (losses)		$ 20.5			$ 4.3		$ 21.4