Summary Of Significant Accounting Policies (Software) (Details) (Software [Member], USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Quantifying Misstatement in Current Year Financial Statements [Line Items]
Overstatement of revenue		$ 2.8
Overstatement of costs		1.9
Out-of-period impact expense (revenue) adjustment	1.1
Net Revenue [Member]
Quantifying Misstatement in Current Year Financial Statements [Line Items]
Out-of-period impact expense (revenue) adjustment	(4.2)
Cost of Goods Sold [Member]
Quantifying Misstatement in Current Year Financial Statements [Line Items]
Out-of-period impact expense (revenue) adjustment	$ 3.1