Fair Value Measurements (Schedule Of Fair Value Of Assets And Liabilities) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2012	Sep. 30, 2011
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Assets at Fair Value	$ 101.6	$ 118.2
Other liabilities		51.0
Total Liabilities at Fair Value	56.5	94.8
Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Assets at Fair Value
Other liabilities
Total Liabilities at Fair Value
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Assets at Fair Value	101.6	118.2
Total Liabilities at Fair Value	56.5	43.8
Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total Assets at Fair Value
Other liabilities		51.0
Total Liabilities at Fair Value		51.0
Interest Rate Swap Contracts [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	48.0	48.2
Derivative liabilities	4.3	6.0
Interest Rate Swap Contracts [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets
Derivative liabilities
Interest Rate Swap Contracts [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	48.0	48.2
Derivative liabilities	4.3	6.0
Interest Rate Swap Contracts [Member] | Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets
Derivative liabilities
Forward Exchange Contracts [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	53.6	70.0
Derivative liabilities	52.2	37.8
Forward Exchange Contracts [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets
Derivative liabilities
Forward Exchange Contracts [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	53.6	70.0
Derivative liabilities	52.2	37.8
Forward Exchange Contracts [Member] | Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets
Derivative liabilities