Restructuring and Other Special Charges, Net (Components of Restructuring) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
Restructuring Charges [Abstract]
Restructuring costs (benefits), net									$ (2,177)
Restructuring costs									1,523	14,473
Other related costs									8,537	5,725
Asset impairment charges									1,729	4,250	0
Total restructuring and other special charges	$ 1,663	$ (1,729)	$ 2,443	$ 5,712	$ 6,187	$ 2,431	$ 2,500	$ 13,330	$ 8,089	$ 24,448	$ 0