Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income applicable to Piedmont	$ 50,208	$ 57,830
Other comprehensive income:
Effective portion of gain/(loss) on derivative instruments that are designated and qualify as cash flow hedges (See Note 4)	(2,024)	1,517
Plus: Reclassification of net (gain)/loss included in net income (See Note 4)	(771)	1,052
Other comprehensive income	(2,795)	2,569
Comprehensive income applicable to Piedmont	$ 47,413	$ 60,399