XML 28 R31.htm IDEA: XBRL DOCUMENT v2.4.0.8

Long-term Debt - Long-Term Debt (Parenthetical) (Detail)	Mar. 31, 2014 7 7/8% Senior Subordinated Notes [Member]	Apr. 22, 2010 7 7/8% Senior Subordinated Notes [Member]	Mar. 31, 2014 5 7/8% Senior Subordinated Notes [Member]	Feb. 09, 2012 5 7/8% Senior Subordinated Notes [Member]	Mar. 31, 2014 5% Senior Subordinated Notes [Member]	Oct. 30, 2012 5% Senior Subordinated Notes [Member]	Mar. 31, 2014 5 3/8% Senior Notes [Member]	Jan. 10, 2014 5 3/8% Senior Notes [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	7.875%	7.875%	5.875%	5.875%	5.00%	5.00%	5.375%	5.375%

X

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

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

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

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- Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration