Debt (Narratives) (Details)
In Millions, unless otherwise specified |
12 Months Ended | 7 Months Ended | 12 Months Ended | 6 Months Ended | 12 Months Ended | 12 Months Ended | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sep. 30, 2014
USD ($)
|
Sep. 30, 2013
USD ($)
|
Sep. 30, 2012
USD ($)
|
Sep. 30, 2014
Eurobond 3.875%
USD ($)
|
Sep. 30, 2014
Eurobond 3.875%
EUR (€)
|
Apr. 30, 2013
Revolving Credit Facility [Member]
Credit Agreement 2013 Member [Member]
|
Sep. 30, 2014
Revolving Credit Facility [Member]
Credit Agreement 2013 Member [Member]
USD ($)
|
Jun. 30, 2014
Revolving Credit Facility [Member]
Credit Agreement 2013 Member [Member]
USD ($)
|
Sep. 30, 2014
Revolving Credit Facility [Member]
Credit Agreement 2013 Member [Member]
Maximum [Member]
|
Sep. 30, 2014
Foreign Subsidiary Facility [Member]
USD ($)
|
Mar. 20, 2014
Chinese Renminbi (RMB) Syndicated Credit Facility [Member]
USD ($)
|
Mar. 20, 2014
Chinese Renminbi (RMB) Syndicated Credit Facility [Member]
CNY
|
Sep. 30, 2014
Chinese Renminbi (RMB) Syndicated Credit Facility [Member]
USD ($)
|
Sep. 30, 2014
Chinese Renminbi (RMB) Syndicated Credit Facility [Member]
CNY
|
Sep. 30, 2014
Senior Note 3.35%
USD ($)
|
Sep. 30, 2013
Senior Note 3.35%
USD ($)
|
Sep. 30, 2014
Commercial Paper [Member]
|
|
Debt Instruments [Abstract] | |||||||||||||||||
Short-term debt, weighted average interest rate | 1.50% | 1.80% | |||||||||||||||
Cash paid for interest, net of amounts capitalized | $ 132.4 | $ 136.1 | $ 127.6 | ||||||||||||||
Debt Instrument [Line Items] | |||||||||||||||||
Debt instrument, issuance date | Jul. 31, 2014 | ||||||||||||||||
Debt instrument, maturity date | Jul. 31, 2024 | ||||||||||||||||
Senior Notes | 400.0 | 0 | |||||||||||||||
Interest rate of debt, stated percentage | 3.875% | 3.875% | 3.35% | ||||||||||||||
Amount classified as long-term debt based on ability and intent to refinance | 378.9 | 300.0 | |||||||||||||||
Debt instrument, maturity year | 2024 | 2014 | |||||||||||||||
Credit facility, initiation date | Apr. 30, 2013 | Jun. 11, 2012 | Jun. 11, 2012 | ||||||||||||||
Credit facility, length credit agreement in years | 5 years | ||||||||||||||||
Credit facility, maximum borrowing capacity | 2,500.0 | 2,595.0 | 189.7 | 160.9 | 1,000.0 | ||||||||||||
Credit facility, expiration date | Apr. 30, 2018 | Mar. 20, 2014 | Mar. 20, 2014 | ||||||||||||||
Debt instrument, expiration, month year | March 2015 | March 2015 | |||||||||||||||
Covenant, ratio of total debt to total capitalization | 70.00% | ||||||||||||||||
Credit facility, amount borrowed and outstanding | 0 | 180.6 | |||||||||||||||
Repayment outstanding balance | $ 40.2 | 250.0 |