Restructuring and Impairments, Net (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013	Sep. 30, 2012
Summarized restructuring and asset impairment expenses by segment
Total Restructuring/Impairments,net	$ 2,601	[1]	$ 1,108	[1]	$ 11,325	$ 624
Transportation Americas [Member]
Summarized restructuring and asset impairment expenses by segment
Total Restructuring/Impairments,net	1,941		138		9,280	138
Transportation Europe and ROW [Member]
Summarized restructuring and asset impairment expenses by segment
Total Restructuring/Impairments,net	(2,207)		241		(2,284)	155
Industrial Energy Americas [Member]
Summarized restructuring and asset impairment expenses by segment
Total Restructuring/Impairments,net	63		360		156	408
Industrial Energy Europe and ROW [Member]
Summarized restructuring and asset impairment expenses by segment
Total Restructuring/Impairments,net	2,589		369		3,659	(37)
Unallocated Corporate [Member]
Summarized restructuring and asset impairment expenses by segment
Total Restructuring/Impairments,net	$ 215		$ 0		$ 514	$ (40)

[1] See Note 13 for detail by segment.