Property and Equipment (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property and Equipment [Abstract]
Depreciation	$ 774.8	$ 754.0	$ 732.4
Land	198.7	201.4
Buildings	6,489.9	6,373.8
Equipment	7,752.7	7,542.9
Construction in progress	1,205.4	799.9
Property and equipment, gross	15,646.7	14,918.0
Less accumulated depreciation	(7,671.2)	(7,157.8)
Property and equipment, net	7,975.5	7,760.2
Interest Costs, Capitalized During Period	24.1	21.0	25.7
Operating Leases, Rent Expense	$ 227.2	$ 262.2	$ 267.4