Debt and Credit Facilities (Short-Term Borrowings and Current Maturities of Long-Term Debt) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Short-term borrowings and current maturities of long-term debt	$ 373.9	$ 367.7
Debentures With Put Feature [Member]
Short-term borrowings and current maturities of long-term debt	343.0	343.0
Current Maturities Of Long Term Debt [Member]
Short-term borrowings and current maturities of long-term debt	13.5	8.0
Other Short Term Borrowings [Member]
Short-term borrowings and current maturities of long-term debt	$ 17.4	$ 16.7