Label	Element	Value
Revolving Credit Facility [Member]
Debt Instrument, Interest Rate During Period	us-gaap_DebtInstrumentInterestRateDuringPeriod	1.65%
Line of Credit Facility, Remaining Borrowing Capacity	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity	$ 445,700,000
Senior Notes [Member]
Debt Instrument, Interest Rate During Period	us-gaap_DebtInstrumentInterestRateDuringPeriod	1.65%

The average effective interest rate during the reporting period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-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

Name:	us-gaap_DebtInstrumentInterestRateDuringPeriod
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration