2.4.0.82116100 - Disclosure - 6. Redeemable noncontrolling interests operating partnership / Redeemable partnership unitstruefalsefalse1false falsefalseD2013Q2YTDhttp://www.sec.gov/CIK0001407739duration2013-01-01T00:00:002013-06-30T00:00:001true 1dft_RedeemableNoncontrollingInterestsOperatingPartnershipRedeemablePartnershipUnitsAbstractdft_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Redeemable noncontrolling interests – operating partnership / Redeemable partnership units [Abstract]2false 2us-gaap_MinorityInterestDisclosureTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Redeemable noncontrolling interests – operating partnership / Redeemable partnership units</font></div><div style="line-height:120%;padding-top:6px;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Redeemable noncontrolling interests – operating partnership, as presented on DFT’s consolidated balance sheets, represent the OP units held by individuals and entities other than DFT. These interests are also presented on the Operating Partnership’s consolidated balance sheets, referred to as “redeemable partnership units.” Accordingly, the following discussion related to redeemable noncontrolling interests – operating partnership of the REIT refers equally to redeemable partnership units of the Operating Partnership.</font></div><div style="line-height:120%;padding-top:12px;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The redemption value of redeemable noncontrolling interests – operating partnership as of </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">June 30, 2013</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">December 31, 2012</font><font style="font-family:inherit;font-size:10pt;"> was </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">$383.9 million</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">$453.9 million</font><font style="font-family:inherit;font-size:10pt;">, respectively, based on the closing share price of DFT’s common stock of </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">$24.15</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">$24.16</font><font style="font-family:inherit;font-size:10pt;">, respectively, on those dates.</font></div><div style="line-height:120%;padding-top:12px;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Holders of OP units are entitled to receive distributions in a per unit amount equal to the per share dividends made with respect to each share of DFT’s common stock, if and when DFT’s Board of Directors declares such a dividend. Holders of OP units have the right to tender their units for redemption, in an amount equal to the fair market value of DFT’s common stock. DFT may elect to redeem tendered OP units for cash or for shares of DFT’s common stock. During the </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">six</font><font style="font-family:inherit;font-size:10pt;"> months ended </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">June 30, 2013</font><font style="font-family:inherit;font-size:10pt;">, OP unitholders redeemed a total of </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">2,891,269</font><font style="font-family:inherit;font-size:10pt;"> OP units in exchange for an equal number of shares of common stock. See Note 2.</font></div></div>falsefalsefalsenonnum:textBlockItemTypenaThe entire disclosure for noncontrolling interest in consolidated subsidiaries, which could include the name of the subsidiary, the ownership percentage held by the parent, the ownership percentage held by the noncontrolling owners, the amount of the noncontrolling interest, the location of this amount on the balance sheet (when not reported separately), an explanation of the increase or decrease in the amount of the noncontrolling interest, the noncontrolling interest share of the net Income or Loss of the subsidiary, the location of this amount on the income statement (when not reported separately), the nature of the noncontrolling interest such as background information and terms, the amount of the noncontrolling interest represented by preferred stock, a description of the preferred stock, and the dividend requirements of the preferred stock.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.31) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=18733093&loc=SL4573702-111684 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false0Redeemable noncontrolling interests – operating partnership / Redeemable partnership units [Text Block]false6. Redeemable noncontrolling interests operating partnership / Redeemable partnership unitsUnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.dft.com/role/A6RedeemableNoncontrollingInterestsOperatingPartnershipRedeemablePartnershipUnits12