3. Fair Value Investments (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Investments	$ 77.5	$ 68.4
Total long-term debt, excluding capital leases and current maturities	423.2	720.0
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Investments	382.9	272.5
Total long-term debt, excluding capital leases and current maturities	$ 433.0	$ 778.4