Summary of Significant Accounting Policies (Policies)	9 Months Ended
Sep. 30, 2022
Summary of Significant Accounting Policies
Basis of Presentation	Basis of Presentation The accompanying unaudited condensed consolidated financial statements and notes are prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial information and with the instructions of Form 10-Q and Article 10 of Regulation S-X. Accordingly, these condensed consolidated financial statements do not contain certain information required in annual financial statements and notes as required under GAAP. In our opinion, all adjustments considered necessary for a fair presentation have been included, and all such adjustments are of a normal recurring nature. All intercompany transactions and balances have been eliminated. The results of operations for the three and nine months ended September 30, 2022 and 2021 are not necessarily indicative of the results that may be expected for a full year. These condensed consolidated financial statements should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2021, filed with the Securities and Exchange Commission on February 22, 2022 ("Annual Report"). The accompanying condensed consolidated financial statements include our accounts and those of our wholly owned subsidiaries and consolidated variable interest entities ("VIEs"), including JBG SMITH LP. See Note 5 for additional information on our VIEs. The portions of the equity and net income (loss) of consolidated entities that are not attributable to us are presented separately as amounts attributable to noncontrolling interests in our condensed consolidated financial statements. References to our financial statements refer to our unaudited condensed consolidated financial statements as of September 30, 2022 and December 31, 2021, and for the three and nine months ended September 30, 2022 and 2021. References to our balance sheets refer to our condensed consolidated balance sheets as of September 30, 2022 and December 31, 2021. References to our statements of operations refer to our condensed consolidated statements of operations for the three and nine months ended September 30, 2022 and 2021. References to our statements of comprehensive income (loss) refer to our condensed consolidated statements of comprehensive income (loss) for the three and nine months ended September 30, 2022 and 2021.
Income Taxes	Income Taxes We have elected to be taxed as a REIT under sections 856-860 of the Internal Revenue Code of 1986, as amended (the "Code"). Under those sections, a REIT which distributes at least 90% of its REIT taxable income as dividends to its shareholders each year and which meets certain other conditions will not be taxed on that portion of its taxable income which is distributed to its shareholders. We currently adhere and intend to continue to adhere to these requirements and to maintain our REIT status in future periods. We also participate in the activities conducted by our subsidiary entities that have elected to be treated as taxable REIT subsidiaries under the Code. As such, we are subject to federal, state and local taxes on the income from those activities.
Reclassification	Reclassification Intangible assets totaling $202.0 million were reclassified from "Other assets, net" to "Intangible assets, net" in our balance sheet as of December 31, 2021 to present intangible assets separately from other assets, which is consistent with our current year presentation.
Use of Estimates	Use of Estimates The preparation of the financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities, and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenue and expenses during the reporting periods. The most significant of these estimates include: (i) the underlying cash flows and holding periods used in assessing impairment of our real estate assets; (ii) the determination of useful lives for tangible and intangible assets; and (iii) the assessment of the collectability of receivables, including deferred rent receivables. Longer estimated holding periods for real estate assets directly reduce the likelihood of recording an impairment loss. If there is a change in the strategy for an asset or if market conditions dictate an earlier sale date, an impairment loss may be recognized, and such loss could be material.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Reference Rate Reform In March 2020, the Financial Accounting Standards Board issued Accounting Standards Update 2020-04, Reference Rate Reform ("Topic 848"). Topic 848 contains practical expedients for reference rate reform related activities that impact debt, leases, derivatives and other contracts. The guidance in Topic 848 is optional and may be elected over the period of March 12, 2020 through December 31, 2022 as reference rate reform activities occur. During the nine months ended September 30, 2022, we elected to apply the hedge accounting expedients that allows us to (i) continue to amortize previously deferred gains and losses in accumulated other comprehensive income (loss) related to terminated hedges into earnings in accordance with the underlying hedged forecasted transactions, (ii) modify loan agreements to replace the reference rate without treating the change as a contract modification and (iii) modify the reference rate of the hedging instruments without it being considered a change in critical terms requiring redesignation. We have elected to apply the hedge accounting expedients related to (i) the assertion that our hedged forecasted transactions remain probable and (ii) the assessments of effectiveness for future London Interbank Offered Rate ("LIBOR") indexed cash flows to assume that the index upon which future hedged transactions will be based matches the index on the corresponding derivatives. Application of these expedients preserves the past presentation of our derivatives. We will continue to evaluate the impact of the guidance and may apply other elections, as applicable.

Summary of Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2022

Summary of Significant Accounting Policies

The accompanying unaudited condensed consolidated financial statements and notes are prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial information and with the instructions of Form 10-Q and Article 10 of Regulation S-X. Accordingly, these condensed consolidated financial statements do not contain certain information required in annual financial statements and notes as required under GAAP. In our opinion, all adjustments considered necessary for a fair presentation have been included, and all such adjustments are of a normal recurring nature. All intercompany transactions and balances have been eliminated. The results of operations

for the three and nine months ended September 30, 2022 and 2021 are not necessarily indicative of the results that may be expected for a full year. These condensed consolidated financial statements should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2021, filed with the Securities and Exchange Commission on February 22, 2022 ("Annual Report").

The accompanying condensed consolidated financial statements include our accounts and those of our wholly owned subsidiaries and consolidated variable interest entities ("VIEs"), including JBG SMITH LP. See Note 5 for additional information on our VIEs. The portions of the equity and net income (loss) of consolidated entities that are not attributable to us are presented separately as amounts attributable to noncontrolling interests in our condensed consolidated financial statements.

References to our financial statements refer to our unaudited condensed consolidated financial statements as of September 30, 2022 and December 31, 2021, and for the three and nine months ended September 30, 2022 and 2021. References to our balance sheets refer to our condensed consolidated balance sheets as of September 30, 2022 and December 31, 2021. References to our statements of operations refer to our condensed consolidated statements of operations for the three and nine months ended September 30, 2022 and 2021. References to our statements of comprehensive income (loss) refer to our condensed consolidated statements of comprehensive income (loss) for the three and nine months ended September 30, 2022 and 2021.

Income Taxes

We have elected to be taxed as a REIT under sections 856-860 of the Internal Revenue Code of 1986, as amended (the "Code"). Under those sections, a REIT which distributes at least 90% of its REIT taxable income as dividends to its shareholders each year and which meets certain other conditions will not be taxed on that portion of its taxable income which is distributed to its shareholders. We currently adhere and intend to continue to adhere to these requirements and to maintain our REIT status in future periods. We also participate in the activities conducted by our subsidiary entities that have elected to be treated as taxable REIT subsidiaries under the Code. As such, we are subject to federal, state and local taxes on the income from those activities.

Reclassification

Intangible assets totaling $202.0 million were reclassified from "Other assets, net" to "Intangible assets, net" in our balance sheet as of December 31, 2021 to present intangible assets separately from other assets, which is consistent with our current year presentation.

Use of Estimates

Use of Estimates

The preparation of the financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities, and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenue and expenses during the reporting periods. The most significant of these estimates include: (i) the underlying cash flows and holding periods used in assessing impairment of our real estate assets; (ii) the determination of useful lives for tangible and intangible assets; and (iii) the assessment of the collectability of receivables, including deferred rent receivables. Longer estimated holding periods for real estate assets directly reduce the likelihood of recording an impairment loss. If there is a change in the strategy for an asset or if market conditions dictate an earlier sale date, an impairment loss may be recognized, and such loss could be material.

Recent Accounting Pronouncements

Reference Rate Reform

In March 2020, the Financial Accounting Standards Board issued Accounting Standards Update 2020-04, Reference Rate Reform ("Topic 848"). Topic 848 contains practical expedients for reference rate reform related activities that impact debt, leases, derivatives and other contracts. The guidance in Topic 848 is optional and may be elected over the period of March 12, 2020 through December 31, 2022 as reference rate reform activities occur. During the nine months ended September 30, 2022, we elected to apply the hedge accounting expedients that allows us to (i) continue to amortize previously deferred gains and losses in accumulated other comprehensive income (loss) related to terminated hedges into earnings in accordance with the underlying hedged forecasted transactions, (ii) modify loan agreements to replace the reference rate without treating the change as a contract modification and (iii) modify the reference rate of the hedging instruments without it being considered a change in critical terms requiring redesignation. We have elected to apply the hedge accounting expedients related to (i) the assertion that our hedged forecasted transactions remain probable and (ii) the assessments of effectiveness for future London Interbank Offered Rate ("LIBOR") indexed cash flows to assume that the index upon which future hedged transactions will be based matches the index on the corresponding derivatives. Application of these expedients preserves the past presentation of our derivatives. We will continue to evaluate the impact of the guidance and may apply other elections, as applicable.

- Definition

Disclosure of accounting policy for income taxes, which may include its accounting policies for recognizing and measuring deferred tax assets and liabilities and related valuation allowances, recognizing investment tax credits, operating loss carryforwards, tax credit carryforwards, and other carryforwards, methodologies for determining its effective income tax rate and the characterization of interest and penalties in the financial statements.

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