Restructuring and Impairments, Net (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Summarized restructuring and asset impairment expenses by segment
Total Restructuring/Impairments, net	$ 14,950	[1]	$ 2,601	[1]	$ 17,632	[1]	$ 11,325	[1]
Transportation Americas
Summarized restructuring and asset impairment expenses by segment
Total Restructuring/Impairments, net	13,654		1,941		13,862		9,280
Transportation Europe & ROW
Summarized restructuring and asset impairment expenses by segment
Total Restructuring/Impairments, net	580		(2,207)		171		(2,284)
Industrial Energy Americas
Summarized restructuring and asset impairment expenses by segment
Total Restructuring/Impairments, net	57		63		109		156
Industrial Energy Europe & ROW
Summarized restructuring and asset impairment expenses by segment
Total Restructuring/Impairments, net	654		2,589		3,485		3,659
Unallocated corporate
Summarized restructuring and asset impairment expenses by segment
Total Restructuring/Impairments, net	$ 5		$ 215		$ 5		$ 514

[1] See Note 13 to the Consolidated Financial Statements.