Other Long-Term Liabilities (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015 ManufacturingSite	Mar. 31, 2014
Other Long-Term Liabilities (Textual) [Abstract]
Amount by which unaccrued maximum of estimated range exceeds minimum	$ 89.4
Accruals for extended environmental-related activities	112.9	83.3
Estimated costs of current investigation and remediation activities included in other accruals	16.9	15.4
Number of manufacturing sites accounting for the majority of the accrual for environmental-related activities	2
Accruals for environmental-related activities of two sites	81.9
Percentage of accrual for environmental-related activities related to two sites	63.10%
Amount of unaccrued maximum related to two sites	$ 58.2
Percentage of aggregate unaccrued maximum related to two sites	65.10%