Financing Agreements (Schedule of Total Debt) (Details) - USD ($) $ in Millions	3 Months Ended
Dec. 31, 2015	Sep. 30, 2015
Long-term Debt, by Current and Noncurrent [Abstract]
Total debt	$ 2,200.6	$ 2,233.2
Current portion of long-term debt	64.4	58.0
Less current portion of debt	64.4	58.0
Total long-term debt	2,136.2	2,175.2
Senior Secured Term Loan A [Member]
Long-term Debt, by Current and Noncurrent [Abstract]
Total long-term debt	$ 914.1	931.7
Debt instrument, maturity date	Sep. 30, 2020
Senior Secured Term Loan B [Member]
Long-term Debt, by Current and Noncurrent [Abstract]
Total long-term debt	$ 756.8	778.3
Debt instrument, maturity date	Sep. 30, 2022
Senior Unsecured 5.75% Notes due on September 1, 2023 [Member]
Long-term Debt, by Current and Noncurrent [Abstract]
Total long-term debt	$ 418.4	418.2
Unsecured debenture interest rate	5.75%
Debt instrument, maturity date	Sep. 01, 2023
Unsecured 7.00% Debentures due on February 15, 2024 [Member]
Long-term Debt, by Current and Noncurrent [Abstract]
Total debt	$ 13.7	13.8
Unsecured debenture interest rate	7.00%
Debt instrument, maturity date	Feb. 15, 2024
Unsecured 6.75% Debentures due on December 15, 2027 [Member]
Long-term Debt, by Current and Noncurrent [Abstract]
Total debt	$ 29.6	29.6
Unsecured debenture interest rate	6.75%
Debt instrument, maturity date	Dec. 15, 2027
Other [Member]
Long-term Debt, by Current and Noncurrent [Abstract]
Total debt	$ 3.6	$ 3.6

Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19,20)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(2))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Represents the aggregate of total long-term debt, including current maturities and short-term debt.

+ References

No definition available.

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- References

No definition available.

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Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

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- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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