Amount of other expense that is infrequent in occurrence or unusual in nature.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 20
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6365513&loc=d3e15122-107781

Name:	us-gaap_OtherNonrecurringExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Special Charges (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
Special Charges (Details) - USD ($) $ in Millions	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Unusual or Infrequent Item [Line Items]
Cash payment for special charges			$ 25.6
Unusual or Infrequent Item
Unusual or Infrequent Item [Line Items]
Other nonrecurring expense	$ 9.5	$ 6.6	$ 31.6	$ 8.2