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Palo Verde Sale Leaseback Variable Interest Entities (Tables)
9 Months Ended
Sep. 30, 2018
Variable Interest Entities [Abstract]  
Amounts relating to the VIEs included in Condensed Consolidated Balance Sheets Our Condensed Consolidated Balance Sheets at September 30, 2018 and December 31, 2017 include the following amounts relating to the VIEs (dollars in thousands):
 
 
September 30, 2018
 
December 31, 2017
Palo Verde sale leaseback property plant and equipment, net of accumulated depreciation
$
106,743

 
$
109,645

Equity — Noncontrolling interests
132,289

 
129,040