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SHAREHOLDERS' EQUITY AND PARTNERS' CAPITAL - Common Stock and Common Units (Details) - $ / shares | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018
Shareholders Equity [Line Items] |  |
Common stock authorized (shares) | 350,000,000 | 350,000,000
Common stock, par value (USD per share) | $ 0.01 | $ 0.01
Common stock issued (shares) | 174,115,111 | 172,656,458
Common stock outstanding (shares) | 174,115,111 | 172,656,458
Operating Partnership |  |
Shareholders Equity [Line Items] |  |
Common units outstanding (shares) | 200,189,077 | 199,414,863
Operating Partnership | Common Units |  |
Shareholders Equity [Line Items] |  |
Noncontrolling interest conversion, calculation of trailing average of trading price, term (days) | 5 days |
Common Stock |  |
Shareholders Equity [Line Items] |  |
Common stock authorized (shares) | 350,000,000 |
Common stock, par value (USD per share) | $ 0.01 |
Common stock issued (shares) | 174,115,111 | 172,656,458
Common stock outstanding (shares) | 174,115,111 | 172,656,458

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- Definition Face amount or stated value per share of common stock. + References Reference 1: 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(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. + References Reference 1: 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(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 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(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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