Face (par) amount of debt instrument at time of issuance.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Fair Value of Financial Instruments (Details 5) - USD ($) $ in Thousands	Sep. 30, 2015	Mar. 21, 2013	Oct. 01, 2010
Term loan B-2
Fair value measurements
Face value of debt instrument		$ 1,507,500
Notes
Fair value measurements
Face value of debt instrument			$ 650,000
Level 2 \| Term loan B-2
Fair value measurements
Face value of debt instrument	$ 1,507,500
Level 2 \| Notes
Fair value measurements
Fair value of Notes	$ 663,000