Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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 210.5-02.22)

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

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

Guarantor and Non-Guarantor Financial Statements, Textuals (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014	May. 23, 2012
Condensed Financial Statements, Captions
Long-term debt	$ 218.9	$ 225.0
Ownership interest by parent	100.00%
Senior Notes
Condensed Financial Statements, Captions
Principal amount of notes			$ 225.0
Long-term debt	$ 218.9