Organization (Details) ft² in Millions	12 Months Ended
Dec. 31, 2020 ft² subsidiary property market
Real Estate Properties [Line Items]
Number of wholly owned subsidiaries \| subsidiary	2
Number of real estate properties	4
Rentable square feet \| ft²	16.4
Piedmont Office Realty Trust, Inc.
Real Estate Properties [Line Items]
Percentage ownership by sole general partner	99.90%
Piedmont Office Holdings, Inc
Real Estate Properties [Line Items]
Percentage ownership by sole limited partner	0.10%
US
Real Estate Properties [Line Items]
Number of office markets \| market	7
In-Service Office Properties
Real Estate Properties [Line Items]
Number of real estate properties	54
Percentage of Class A commercial office space	86.80%
Redevelopment Asset
Real Estate Properties [Line Items]
Number of real estate properties	1

Number Of Wholly Owned Management Subsidiaries

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- Definition

Real Estate Investments, Number of Office Markets

+ References

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- Definition

Real Estate Properties Leased Percent

+ References

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- Definition

Area of a real estate property.

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- Definition

Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055

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Percentage investment held by members or limited partners of limited liability company (LLC) or limited partnership (LP).

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- Definition

The number of real estate properties owned as of the balance sheet date.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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