N-2 - USD ($)

6 Months Ended

11 Months Ended

12 Months Ended

Dec. 31, 2025

Jun. 30, 2022

^[4]

Jun. 30, 2025

Jun. 30, 2024

Jun. 30, 2023

Jul. 31, 2021

Jul. 31, 2020

Cover [Abstract]

Entity Central Index Key

0001219360

false

N-CSRS

Entity Registrant Name

PIMCO High Income Fund

Financial Highlights [Abstract]

Senior Securities [Table Text Block]


Ratios/Supplemental Data
		ARPS
Selected Per Share Data for the Year or Period Ended^:		Total Amount Outstanding				Asset Coverage per Preferred Share (1)				Involuntary Liquidating Preference per Preferred Share (2)				Average Market Value per ARPS (3)

PIMCO Corporate & Income Opportunity Fund
7/1/2025 - 12/31/2025+			N/A				N/A				N/A				N/A
6/30/2025			N/A				N/A				N/A				N/A
6/30/2024		$	4,375,000			$	10,400,210			$	25,000				N/A
6/30/2023			212,650,000				204,962				25,000				N/A
8/1/2021 - 6/30/2022 (i)			212,650,000				184,988				25,000				N/A
7/31/2021			212,650,000				218,218				25,000				N/A
7/31/2020			212,650,000				171,815				25,000				N/A

PIMCO Corporate & Income Strategy Fund
7/1/2025 - 12/31/2025+			N/A				N/A				N/A				N/A
6/30/2025			N/A				N/A				N/A				N/A
6/30/2024			1,075,000				15,313,685				25,000				N/A
6/30/2023			23,525,000				610,350				25,000				N/A
8/1/2021 - 6/30/2022 (i)			23,525,000				566,333				25,000				N/A
7/31/2021			23,525,000				668,805				25,000				N/A
7/31/2020			23,525,000				566,423				25,000				N/A

PIMCO High Income Fund
7/1/2025 - 12/31/2025+			N/A				N/A				N/A				N/A
6/30/2025			N/A				N/A				N/A				N/A
6/30/2024			1,675,000				10,779,665				25,000				N/A
6/30/2023			58,050,000				311,948				25,000				N/A
8/1/2021 - 6/30/2022 (i)			58,050,000				300,723				25,000				N/A
7/31/2021			58,050,000				366,413				25,000				N/A
7/31/2020			58,050,000				311,018				25,000				N/A

PIMCO Income Strategy Fund
7/1/2025 - 12/31/2025+			N/A				N/A				N/A				N/A
6/30/2025			N/A				N/A				N/A				N/A
6/30/2024			925,000				8,653,090				25,000				N/A
6/30/2023			45,200,000				188,823				25,000				N/A
8/1/2021 - 6/30/2022 (i)			45,200,000				189,645				25,000				N/A
7/31/2021			45,200,000				227,165				25,000				N/A
7/31/2020			45,200,000				188,225				25,000				N/A

PIMCO Income Strategy Fund II
7/1/2025 - 12/31/2025+			N/A				N/A				N/A				N/A
6/30/2025			N/A				N/A				N/A				N/A
6/30/2024			3,250,000				4,699,268				25,000				N/A
6/30/2023			87,425,000				189,850				25,000				N/A
8/1/2021 - 6/30/2022 (i)			87,425,000				191,350				25,000				N/A
7/31/2021			87,425,000				231,880				25,000				N/A
7/31/2020			87,425,000				198,210				25,000				N/A

^	A zero balance may reflect actual amounts rounding to less than $0.01 or 0.01%.

+

Unaudited

*	Annualized, except for organizational expense, if any.

~	Not covered by the Report of Independent Registered Public Accounting Firm.

(a)

Net asset value includes adjustments required by U.S. GAAP. These values, and other performance figures relying on them, such as average annual total return data included in the fund’s prospectus and in any shareholder reports, may differ from net asset values and performance reported elsewhere with respect to the Funds.

(b)	Per share amounts based on average number of common shares outstanding during the year or period.

(c)	Auction Rate Preferred Shareholders (“ARPS”). From February 20, 2002 until November 8, 2024, the Funds had one or more series of ARPS outstanding with a liquidation preference of $25,000 per share plus any accumulated, unpaid dividends.

(d)

The tax characterization of distributions is determined in accordance with Federal income tax regulations. The actual tax characterization of distributions paid is determined at the end of the fiscal year. See Note 2, Distributions — Common Shares, in the Notes to Financial Statements for more information.

(e)

Total investment return is calculated assuming a purchase of a common share at the market price on the first day and a sale of a common share at the market price on the last day of each year or period reported. Dividends and distributions, if any, are assumed, for purposes of this calculation, to be reinvested at prices obtained under the Funds’ dividend reinvestment plan. Total investment return does not reflect brokerage commissions in connection with the purchase or sale of Fund shares.

(f)	Calculated on the basis of income and expenses applicable to both common and preferred shares relative to the average net assets of common shareholders. The expense ratio and net investment income do not reflect the effects of dividend payments to preferred shareholders.

(g)	Ratio includes interest expense which primarily relates to participation in borrowing and financing transactions. See Note 5, Borrowings and Other Financing Transactions, in the Notes to Financial Statements for more information.

(h)	Fiscal year end changed from July 31st to June 30th.

(i)	Total distributions for the period ended June 30, 2022 may be lower than prior fiscal years due to fiscal year end change resulting in a reduction of the amount of days in the period ended June 30, 2022.

(j)	Ratios shown do not include expenses of the investment companies in which a Fund may invest. See Note 9, Fees and Expenses, in the Notes to Financial Statements for more information regarding the expenses and any applicable fee waivers associated with these investments.

(1)	“Asset Coverage per Preferred Share” means the ratio that the value of the total assets of the Fund, less all liabilities and indebtedness not represented by ARPS, bears to the aggregate of the involuntary liquidation preference of ARPS, expressed as a dollar amount per ARPS.

(2)	“Involuntary Liquidating Preference“ means the amount to which a holder of ARPS would be entitled upon the involuntary liquidation of the Fund in preference to the Common Shareholders, expressed as a dollar amount per Preferred Share.

(3)

Between November 4, 2024 and November 8, 2024, the Funds redeemed each outstanding series of Auction-Rate Preferred Shares (“ARPS”) at the full liquidation preference (i.e., face value) of the ARPS. Prior to this redemption, there was no active trading market for the ARPS and the Fund was not able to reliably estimate what their value would have been in a third-party market sale. The liquidation value of the ARPS represents its liquidation preference, which approximates fair value of the shares less any accumulated unpaid dividends.

General Description of Registrant [Abstract]

Investment Objectives and Practices [Text Block]

Investment Objective and Strategy Overview

PIMCO High Income Fund’s primary investment objective is to seek high current income, with capital appreciation as a secondary objective.

Fund Insights at NAV

The following affected performance (on a gross basis) during the reporting period:

»

Holdings related to corporate special situation investments, which include companies undergoing stress, distress, challenges, or significant transition, contributed to performance, as the securities posted positive returns.

»

Exposure to emerging market debt contributed to performance, as the securities posted positive total returns.

»

Exposure to high yield contributed to performance, as the securities posted positive total returns.

»

The costs associated with one or more forms of leverage detracted from performance. That said, the net impact on the Fund’s performance of the cost of leverage is generally determined by comparing the return on the additional investments purchased with such leverage against the cost of such leverage.

»

Exposure to the Turkish lira detracted from performance, as the currency depreciated versus the U.S. dollar.

»

Holdings related to emerging market special situations detracted from performance, as holdings of a Brazilian telecom operator posted negative returns.

^[1]

$ 4.86

^[1]

$ 4.67

Latest Premium (Discount) to NAV [Percent]

^[1]

4.07%

Common Shares [Member]

Capital Stock, Long-Term Debt, and Other Securities [Abstract]

Outstanding Security, Title [Text Block]

Common Shares

Outstanding Security, Held [Shares]

181,272

Financial Highlights [Abstract]

Senior Securities Amount

^[2]

$ 0

^[3]

$ 58,050,000

$ 0

$ 1,675,000

$ 58,050,000

$ 58,050,000

$ 58,050,000

Senior Securities Coverage per Unit

^[2],[5]

$ 0

^[3]

$ 300,723

$ 0

$ 10,779,665

$ 311,948

$ 366,413

$ 311,018

Preferred Stock Liquidating Preference

^[2],[6]

0

^[3]

25,000

0

25,000

25,000

25,000

25,000

Senior Securities Average Market Value per Unit

^[2],[7]

$ 0

^[3]

$ 0

$ 0

$ 0

$ 0

$ 0

$ 0

[1]	Performance quoted represents past performance. Past performance is not a guarantee or a reliable indicator of future results. Current performance may be lower or higher than performance shown. Investment return and the principal value of an investment will fluctuate. Returns shown do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or the sale of Fund shares. Total return, market price, NAV, market price distribution rate, and NAV distribution rate will fluctuate with changes in market conditions. The NAV presented may differ from the NAV reported for the same period in other Fund materials. Performance current to the most recent month-end is available at www.pimco.com or via (844) 33-PIMCO. Performance is calculated assuming all dividends and distributions are reinvested at prices obtained under the Fund’s dividend reinvestment plan. Performance does not reflect any brokerage commissions in connection with the purchase or sale of Fund shares.
[2]	A zero balance may reflect actual amounts rounding to less than $0.01 or 0.01%.
[3]	Unaudited
[4]	Total distributions for the period ended June 30, 2022 may be lower than prior fiscal years due to fiscal year end change resulting in a reduction of the amount of days in the period ended June 30, 2022.
[5]	“Asset Coverage per Preferred Share” means the ratio that the value of the total assets of the Fund, less all liabilities and indebtedness not represented by ARPS, bears to the aggregate of the involuntary liquidation preference of ARPS, expressed as a dollar amount per ARPS.
[6]	“Involuntary Liquidating Preference“ means the amount to which a holder of ARPS would be entitled upon the involuntary liquidation of the Fund in preference to the Common Shareholders, expressed as a dollar amount per Preferred Share.
[7]	Between November 4, 2024 and November 8, 2024, the Funds redeemed each outstanding series of Auction-Rate Preferred Shares (“ARPS”) at the full liquidation preference (i.e., face value) of the ARPS. Prior to this redemption, there was no active trading market for the ARPS and the Fund was not able to reliably estimate what their value would have been in a third-party market sale. The liquidation value of the ARPS represents its liquidation preference, which approximates fair value of the shares less any accumulated unpaid dividends.