Segment Information (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012 segments	Dec. 31, 2011	Dec. 31, 2010
Schedule of Revenue from External Customers and Operating Profit Attributed to Foreign Countries by Geographic Area [Abstract]
External Revenues									$ 3,811.9	$ 2,938.3	$ 1,930.7
Operating Profit	158.9	140.7	152.5	122.7	139.5	104.6	95.4	87.3	574.8	426.8	294.2
Schedule of Assets and Long Lived Assets from External Customers Attributed to Foreign Countries by Geographic Area [Abstract]
Total Assets	6,669.9				6,121.0				6,669.9	6,121.0
Segment Information (Textual) [Abstract]
Number of principal business segments of Company									5
Mexico
Schedule of Revenue from External Customers and Operating Profit Attributed to Foreign Countries by Geographic Area [Abstract]
External Revenues									96.4	123.0	98.3
Operating Profit									0.2	18.4	3.4
Schedule of Assets and Long Lived Assets from External Customers Attributed to Foreign Countries by Geographic Area [Abstract]
Total Assets	285.8				240.4				285.8	240.4
Long-Lived Assets	$ 141.2				$ 143.2				$ 141.2	$ 143.2