Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Equity
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	2,000,000,000us-gaap_CommonStockSharesAuthorized	2,000,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued (in shares)	141,434,905us-gaap_CommonStockSharesIssued	126,598,987us-gaap_CommonStockSharesIssued
Common stock, shares outstanding (in shares)	141,434,905us-gaap_CommonStockSharesOutstanding	126,598,987us-gaap_CommonStockSharesOutstanding

Face amount or stated value per share of common stock.

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

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

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