Supplemental Cash Flow Information

12 Months Ended

Dec. 31, 2017

Supplemental Cash Flow Elements [Abstract]

NOTE 19. SUPPLEMENTAL CASH FLOW INFORMATION

Our significant noncash investing and financing activities for the years ended December 31, 2017, 2016 and 2015 included the following:

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We contributed operating properties owned by NAIF to USLF in 2017. See Notes 4, 5 and 12 for more information on this transaction. As a result, we received $1.1 billion of units or ownership interest in USLF as a portion of our proceeds from this contribution. In addition, USLF assumed the $19.5 million note receivable backed by real estate we received in 2017 and $956.0 million of secured mortgage debt.

•	We received $153.3 million, $135.3 million and $65.3 million of ownership interests in certain unconsolidated co-investment ventures as a portion of our proceeds from the contribution of properties to these entities during 2017, 2016 and 2015, respectively, as disclosed in Note 5.

•	We capitalized $28.8 million, $25.8 million and $22.7 million in 2017, 2016 and 2015, respectively, of equity-based compensation expense resulting from our development and leasing activities.

•	We issued 1.5 million shares and 1.9 million shares in 2017 and 2016, respectively, of the Parent’s common stock upon redemption of an equal number of common limited partnership units in the OP, as disclosed in Note 12.

•	We received $53.8 million and $235.1 million of notes receivable backed by real estate in exchange for the disposition of real estate in 2017 and 2015. See Note 7 for more information on our notes receivable backed by real estate.

•	During 2015, we assumed $290.7 million of secured mortgage debt in connection with the acquisition of real estate properties. Also, as partial consideration for the disposition of some properties acquired during 2015, the buyer assumed debt of $170.1 million.

•	In 2015, exchangeable senior notes of $459.8 million, that were issued by the OP, were exchanged into 11.9 million shares of common stock of the Parent.

•	In 2015, common limited partnership units were issued as partial consideration for the acquisition of properties as disclosed in Note 11.

•	See Note 3 for information related to the KTR transaction in 2015.