Property and Equipment, Net Property and Equipment, Net (Details Textual) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2011
|
|
Property, Plant and Equipment [Line Items] | |||
Depreciation, amortization and depletion of property and equipment | $ 877.4 | $ 848.5 | $ 843.6 |
Property, Plant and Equipment [Member]
|
|||
Property, Plant and Equipment [Line Items] | |||
Depreciation, amortization and depletion of property and equipment | $ 806.7 | $ 778.4 | $ 766.9 |