Consolidated Statements of Cash Flows (Parenthetical) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
|
Statement of Cash Flows [Abstract] | |||
Fair value of tangible assets acquired in cash | $ 0 | $ 0 | $ 26.4 |