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Equity (Details) (USD $) | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2014 | Jun. 30, 2013 | Dec. 31, 2013
Equity [Abstract] |  |  |
Issuance Costs |  | $ 2,000,000 |
Stock Offering |  |  | 11,100,000
Share Price |  | $ 29.50 |
Common Stock, Discount on Shares |  | 0.96 |
Equity Forward Sale Agreement, Settlement Threshold | 10,400,000 |  |
Equity Forward Sale Agreement future settlement amount | 281,000,000 |  |
Option Indexed to Issuer's Equity, Settlement Alternatives, Cash, at Fair Value | $ 79,000,000 |  |
Net share settlement | 2,287,000 |  |

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- Definition Funds that would be received undter the equity forward sale agreement in the future. + References No definition available. + Details
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- Definition Shares required to contractually settle Equity forward sale agreement requirements. + References No definition available. + Details
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- Definition Amount of decrease in additional paid in capital (APIC) resulting from direct costs associated with issuing stock. Includes, but is not limited to, legal and accounting fees and direct costs associated with stock issues under a shelf registration. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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- Definition Discount on common shares, or any unamortized balance thereof, shown separately as a deduction from the applicable account(s) as circumstances require. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187103-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 07 -Article 4 + Details
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- Definition Fair value of each cash settlement alternative for each freestanding option contract. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 40 -Section 50 -Paragraph 5 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6445032&loc=d3e90205-114008 + Details
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- Definition Price of a single share of a number of saleable stocks of a company. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
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