Related Party Transactions	12 Months Ended
Dec. 31, 2019
Related Party Transactions [Abstract]
Related-Party Transactions	Related-Party TransactionsDuring the year ended December 31, 2019, Piedmont entered into employment or retirement agreements with certain of its current and former executive officers as more fully described in its Definitive Proxy Statement and Current Report on Form 8-K filed on March 19, 2019. Further, during the years ended December 31, 2019, 2018, and 2017, Piedmont recognized approximately $0.2 million, $0.3 million, and $0.1 million, respectively, of expense related to a consulting agreement with its former Chief Investment Officer. There were no other related-party transactions during the three years ended December 31, 2019.

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-URI http://asc.fasb.org/topic&trid=2122745

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