Supplemental Cash Flow Information (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Supplemental Cash Flow Information (Textuals)
Interest paid, net of amounts capitalized	$ 250.4	$ 241.2	$ 234.0
Net refunds from income taxes	39.6	107.0	109.1
Accounts payable related to capital expenditures	4.7	15.7	16.7
Deferred Revenue, Revenue Recognized	56.5	54.9	54.4
Grants Receivable, Current	82.6
Revenue from Grants	$ 48.0	$ 0	$ 0