3. Fair Value Financial Instruments (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Investments	$ 81.6	$ 77.5
Total long-term debt, excluding capital leases and current maturities	423.4	423.2
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	367.9	382.9
Total long-term debt, excluding capital leases and current maturities	$ 452.3	$ 433.0