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Financing Arrangements (Fair Value of Debt) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Carrying amount	$ 383.6	$ 378.6
Fair Value, Inputs, Level 1 [Member] \| Reported Value Measurement [Member]
Debt Instrument [Line Items]
Carrying amount	250.0	250.0
Fair Value, Inputs, Level 1 [Member] \| Estimate of Fair Value Measurement [Member]
Debt Instrument [Line Items]
Fair value	$ 275.6	$ 266.3

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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