Significant Accounting Policies (Receivables) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Significant Accounting Policies [Abstract]
Unamortized discount on long-term receivable	$ 12.1	$ 15.1
Accounts receivable due beyond one year	178.2
Accounts receivable, due in fiscal 2016	96.4
Accounts receivable, due in fiscal 2017	44.8
Accounts receivable, due in fiscal 2018	17.9
Accounts receivable, due in fiscal 2019	15.2
Accounts receivable, due in fiscal 2020	3.6
Accounts receivable, due thereafter	$ 0.3

Amount due from customers or clients, more than one year from the balance sheet date, for goods or services that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.17)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 3

-Article 5

Name:	us-gaap_AccountsReceivableNetNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant