Accounting and Disclosure Changes (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Cumulative translation adjustment	$ 3.4
Unrecognized tax benefits	$ 17

Cumulative translation adjustment resulting from translating foreign currency financial statements into the reporting currency. Reported in equity as part of accumulated other comprehensive income.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 220

-SubTopic 10

-Section 45

-Paragraph 11

-URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e637-108580

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 830

-SubTopic 30

-Section 45

-Paragraph 12

-URI http://asc.fasb.org/extlink&oid=6915805&loc=d3e32022-110900

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 830

-SubTopic 30

-Section 45

-Paragraph 20

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6915805&loc=d3e32211-110900

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