Debt and Credit Facilities (Short-Term Borrowings and Current Maturities of Long-Term Debt) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Jul. 31, 2013
Short-term Debt [Line Items]
Short-term borrowings and current maturities of long-term debt	$ 482.7	$ 367.7
Debentures With Put Feature [Member]
Short-term Debt [Line Items]
Short-term borrowings and current maturities of long-term debt	343.0	343.0
Six Point Zero Zero Zero Percent Senior Notes Due Two Thousand Thirteen [Member]
Short-term Debt [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.00%		6.00%
Other Current Maturities of Long Term Debt [Member]
Short-term Debt [Line Items]
Short-term borrowings and current maturities of long-term debt	23.6	8.0
Other Short Term Borrowings [Member]
Short-term Debt [Line Items]
Short-term borrowings and current maturities of long-term debt	$ 116.1	$ 16.7