TreeHouse Foods (THS) 10-Q 5 Aug 24 2024 Q2 Quarterly report Financial data

Cover

Cover - shares shares in Millions	6 Months Ended
	Jun. 30, 2024	Jul. 31, 2024
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2024
Document Transition Report	false
Entity File Number	001-32504
Entity Registrant Name	TreeHouse Foods, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	20-2311383
Entity Address, Address Line One	2021 Spring Road,
Entity Address, Address Line Two	Suite 600
Entity Address, City or Town	Oak Brook
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60523
City Area Code	708
Local Phone Number	483-1300
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	THS
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		51.9
Amendment Flag	false
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q2
Entity Central Index Key	0001320695
Current Fiscal Year End Date	--12-31

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 105.8	$ 320.3
Receivables, net	186.2	175.6
Inventories	592.4	534
Prepaid expenses and other current assets	43.9	24.9
Total current assets	928.3	1,054.8
Property, plant, and equipment, net	718.7	737.6
Operating lease right-of-use assets	172.1	193
Goodwill	1,822.3	1,824.7
Intangible assets, net	235.3	257.4
Other assets, net	28.3	39.1
Total assets	3,905	4,106.6
Current liabilities:
Accounts payable	493.8	534.9
Accrued expenses	151.3	169
Current portion of long-term debt	0.6	0.4
Total current liabilities	645.7	704.3
Long-term debt	1,398.2	1,396
Operating lease liabilities	143.8	165
Deferred income taxes	106	111.4
Other long-term liabilities	61.2	65.1
Total liabilities	2,354.9	2,441.8
Commitments and contingencies (Note 17)
Stockholders' equity:
Preferred stock, par value $0.01 per share, 10.0 shares authorized, none issued	0	0
Common stock, par value $0.01 per share, 90.0 shares authorized, 51.8 and 54.1 shares outstanding as of June 30, 2024 and December 31, 2023, respectively	0.6	0.6
Treasury stock	(323.7)	(234.2)
Additional paid-in capital	2,230.5	2,223.4
Accumulated deficit	(277.3)	(248.9)
Accumulated other comprehensive loss	(80)	(76.1)
Total stockholders' equity	1,550.1	1,664.8
Total liabilities and stockholders' equity	$ 3,905	$ 4,106.6

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Jun. 30, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Preferred stock, par value (in usd per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	90,000,000	90,000,000
Common stock, shares outstanding (in shares)	51,800,000	54,100,000

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Income Statement [Abstract]
Net sales		$ 788.5	$ 803.5	$ 1,609.2	$ 1,657.5
Cost of sales		660.2	670.3	1,368.9	1,370.7
Gross profit		128.3	133.2	240.3	286.8
Operating expenses:
Selling and distribution		35.5	39.7	78.4	84.4
General and administrative		54.2	53.9	110	107.3
Amortization expense		12.1	12.1	24.2	24.1
Asset impairment		19.3	0	19.3	0
Other operating expense (income), net		11.2	(2.8)	17.6	(0.2)
Total operating expenses		132.3	102.9	249.5	215.6
Operating (loss) income		(4)	30.3	(9.2)	71.2
Other expense:
Interest expense		15.6	19.2	31.2	37
Interest income		(0.1)	(10.8)	(4.1)	(25.4)
Loss (gain) on foreign currency exchange		1.5	(3.3)	4.9	(3)
Other (income) expense, net		(0.1)	(6.2)	(5)	3.5
Total other expense (income)		16.9	(1.1)	27	12.1
(Loss) income before income taxes		(20.9)	31.4	(36.2)	59.1
Income tax (benefit) expense		(4.2)	9	(7.8)	16.3
Net (loss) income from continuing operations		(16.7)	22.4	(28.4)	42.8
Net income (loss) from discontinued operations		0	0.9	0	(4.3)
Net (loss) income		$ (16.7)	$ 23.3	$ (28.4)	$ 38.5
Earnings (loss) per common share - basic:
Continuing operations (in usd per share)		$ (0.32)	$ 0.40	$ (0.54)	$ 0.76
Discontinued operations (in usd per share)		0	0.02	0	(0.08)
Earnings (loss) per share basic (in usd per share)	[1]	(0.32)	0.41	(0.54)	0.68
Earnings (loss) per common share - diluted:
Continuing operations (in usd per share)		(0.32)	0.39	(0.54)	0.75
Discontinued operations (in usd per share)		0	0.02	0	(0.08)
Earnings (loss) per share diluted (in usd per share)	[1]	$ (0.32)	$ 0.41	$ (0.54)	$ 0.68
Weighted average common shares:
Basic (in shares)		52.3	56.4	53	56.3
Diluted (in shares)		52.3	56.8	53	56.8
[1]The sum of the individual per share amounts may not add due to rounding.

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (16.7)	$ 23.3	$ (28.4)	$ 38.5
Other comprehensive (loss) income:
Foreign currency translation adjustments	(1.3)	1.9	(3.9)	2.2
Pension and postretirement reclassification adjustment	0	0.1	0	0.1
Other comprehensive (loss) income	(1.3)	2	(3.9)	2.3
Comprehensive (loss) income	$ (18)	$ 25.3	$ (32.3)	$ 40.8

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Treasury Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Dec. 31, 2022		59
Beginning balance at Dec. 31, 2022	$ 1,687	$ 0.6	$ (133.3)	$ 2,205.4	$ (302)	$ (83.7)
Treasury stock, beginning balance (in shares) at Dec. 31, 2022			(2.9)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	15.2				15.2
Other comprehensive income (loss)	0.3					0.3
Issuance of stock awards (in shares)		0.2
Issuance of stock awards	(5.3)			(5.3)
Stock-based compensation	7.2			7.2
Ending balance (in shares) at Mar. 31, 2023		59.2
Ending balance at Mar. 31, 2023	1,704.4	$ 0.6	$ (133.3)	2,207.3	(286.8)	(83.4)
Treasury stock, ending balance (in shares) at Mar. 31, 2023			(2.9)
Beginning balance (in shares) at Dec. 31, 2022		59
Beginning balance at Dec. 31, 2022	1,687	$ 0.6	$ (133.3)	2,205.4	(302)	(83.7)
Treasury stock, beginning balance (in shares) at Dec. 31, 2022			(2.9)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	38.5
Other comprehensive income (loss)	$ 2.3
Treasury stock repurchases (in shares)	0
Ending balance (in shares) at Jun. 30, 2023		59.3
Ending balance at Jun. 30, 2023	$ 1,734.9	$ 0.6	$ (133.3)	2,212.5	(263.5)	(81.4)
Treasury stock, ending balance (in shares) at Jun. 30, 2023			(2.9)
Beginning balance (in shares) at Mar. 31, 2023		59.2
Beginning balance at Mar. 31, 2023	1,704.4	$ 0.6	$ (133.3)	2,207.3	(286.8)	(83.4)
Treasury stock, beginning balance (in shares) at Mar. 31, 2023			(2.9)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	23.3				23.3
Other comprehensive income (loss)	$ 2					2
Treasury stock repurchases (in shares)	0
Issuance of stock awards (in shares)		0.1
Issuance of stock awards	$ (0.7)			(0.7)
Stock-based compensation	5.9			5.9
Ending balance (in shares) at Jun. 30, 2023		59.3
Ending balance at Jun. 30, 2023	$ 1,734.9	$ 0.6	$ (133.3)	2,212.5	(263.5)	(81.4)
Treasury stock, ending balance (in shares) at Jun. 30, 2023			(2.9)
Beginning balance (in shares) at Dec. 31, 2023	54.1	59.3
Beginning balance at Dec. 31, 2023	$ 1,664.8	$ 0.6	$ (234.2)	2,223.4	(248.9)	(76.1)
Treasury stock, beginning balance (in shares) at Dec. 31, 2023			(5.2)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(11.7)				(11.7)
Other comprehensive income (loss)	(2.6)					(2.6)
Treasury stock repurchases (in shares)			(1.2)
Treasury stock repurchases	(44.3)		$ (44.3)
Issuance of stock awards (in shares)		0.2
Issuance of stock awards	(3.8)			(3.8)
Stock-based compensation	5.7			5.7
Ending balance (in shares) at Mar. 31, 2024		59.5
Ending balance at Mar. 31, 2024	$ 1,608.1	$ 0.6	$ (278.5)	2,225.3	(260.6)	(78.7)
Treasury stock, ending balance (in shares) at Mar. 31, 2024			(6.4)
Beginning balance (in shares) at Dec. 31, 2023	54.1	59.3
Beginning balance at Dec. 31, 2023	$ 1,664.8	$ 0.6	$ (234.2)	2,223.4	(248.9)	(76.1)
Treasury stock, beginning balance (in shares) at Dec. 31, 2023			(5.2)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(28.4)
Other comprehensive income (loss)	$ (3.9)
Treasury stock repurchases (in shares)	(2.5)
Ending balance (in shares) at Jun. 30, 2024	51.8	59.5
Ending balance at Jun. 30, 2024	$ 1,550.1	$ 0.6	$ (323.7)	2,230.5	(277.3)	(80)
Treasury stock, ending balance (in shares) at Jun. 30, 2024			(7.7)
Beginning balance (in shares) at Mar. 31, 2024		59.5
Beginning balance at Mar. 31, 2024	1,608.1	$ 0.6	$ (278.5)	2,225.3	(260.6)	(78.7)
Treasury stock, beginning balance (in shares) at Mar. 31, 2024			(6.4)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(16.7)				(16.7)
Other comprehensive income (loss)	$ (1.3)					(1.3)
Treasury stock repurchases (in shares)	(1.3)		(1.3)
Treasury stock repurchases	$ (45.2)		$ (45.2)
Issuance of stock awards	(0.1)			(0.1)
Stock-based compensation	$ 5.3			5.3
Ending balance (in shares) at Jun. 30, 2024	51.8	59.5
Ending balance at Jun. 30, 2024	$ 1,550.1	$ 0.6	$ (323.7)	$ 2,230.5	$ (277.3)	$ (80)
Treasury stock, ending balance (in shares) at Jun. 30, 2024			(7.7)

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Cash flows from operating activities:
Net (loss) income	$ (28.4)	$ 38.5
Net income (loss) from discontinued operations	0	(4.3)
Net (loss) income from continuing operations	(28.4)	42.8
Adjustments to reconcile net (loss) income to net cash used in operating activities:
Depreciation and amortization	72.8	69.7
Asset impairment	19.3	0
Stock-based compensation	11	13.1
Unrealized gain on derivative contracts	(8.5)	(3.5)
Deferred TSA income	0	(12.3)
Other	2.7	(1.9)
Changes in operating assets and liabilities, net of acquisitions and divestitures:
Receivables	(10.5)	(3.3)
Inventories	(60.6)	(47)
Prepaid expenses and other assets	(6.9)	8
Accounts payable	(47.1)	(86.3)
Accrued expenses and other liabilities	(15.6)	(25.9)
Net cash used in operating activities - continuing operations	(71.8)	(46.6)
Net cash used in operating activities - discontinued operations	0	(3.2)
Net cash used in operating activities	(71.8)	(49.8)
Cash flows from investing activities:
Capital expenditures	(51.1)	(54.3)
Proceeds from sale of fixed assets	1.4	0
Acquisitions, net of cash acquired	0	(102.2)
Net cash used in investing activities - continuing operations	(49.7)	(156.5)
Net cash used in investing activities - discontinued operations	0	(15.6)
Net cash used in investing activities	(49.7)	(172.1)
Cash flows from financing activities:
Borrowings under Revolving Credit Facility	9.5	1,544.3
Payments under Revolving Credit Facility	(9.5)	(1,344.8)
Payments on financing lease obligations	(0.3)	(0.3)
Repurchases of common stock	(88.7)	0
Payments related to stock-based award activities	(3.9)	(6)
Net cash (used in) provided by financing activities - continuing operations	(92.9)	193.2
Net cash (used in) provided by financing activities - discontinued operations	0	0
Net cash (used in) provided by financing activities	(92.9)	193.2
Effect of exchange rate changes on cash and cash equivalents	(0.1)	2.6
Net decrease in cash and cash equivalents	(214.5)	(26.1)
Cash and cash equivalents, beginning of period	320.3	43
Cash and cash equivalents, end of period	105.8	16.9
Supplemental cash flow disclosures:
Interest paid	42.5	45.3
Net income taxes paid	6.6	16.7
Non-cash investing activities:
Capital expenditures incurred but not yet paid	22.3	12.5
Right-of-use assets obtained in exchange for lease obligations	0.3	32.2
Note receivable purchase price adjustment reduction	0	(5.1)
Note receivable increase from paid in kind interest	0	2.2
Deferred payment from acquisition of seasoned pretzel capability	$ 0	$ 4

BASIS OF PRESENTATION

BASIS OF PRESENTATION	6 Months Ended
	Jun. 30, 2024
Accounting Policies [Abstract]
BASIS OF PRESENTATION	1. BASIS OF PRESENTATION The unaudited Condensed Consolidated Financial Statements included herein have been prepared by TreeHouse Foods, Inc. and its consolidated subsidiaries (the "Company," "TreeHouse," "we," "us," or "our"), pursuant to the rules and regulations of the Securities and Exchange Commission ("SEC") applicable to quarterly reporting on Form 10-Q. In our opinion, these statements include all adjustments necessary for a fair presentation of the results of all interim periods reported herein. Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") have been condensed or omitted as permitted by such rules and regulations. The Condensed Consolidated Financial Statements and related notes should be read in conjunction with the Consolidated Financial Statements and related notes included in the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2023. Results of operations for interim periods are not necessarily indicative of annual results. Reclassification Certain prior year amounts have been reclassified to conform to the current year presentation. Specifically, Additions to property, plant, and equipment and Additions to intangible assets have been condensed into Capital expenditures within the Cash flows from investing activities section of the Condensed Consolidated Statements of Cash Flows. Additionally, Accrued purchase of property and equipment and Accrued other intangible assets have been condensed into Capital expenditures incurred but not yet paid within the Non-cash investing activities section of the Condensed Consolidated Statements of Cash Flows. Use of Estimates The preparation of our Condensed Consolidated Financial Statements in conformity with GAAP requires management to use judgment to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosures of contingent assets and liabilities at the date of the Condensed Consolidated Financial Statements, and the reported amounts of net sales and expenses during the reporting period. Actual results could differ from these estimates. Summary of Significant Accounting Policies A detailed description of the Company's significant accounting policies can be found in the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2023. Segment Information The Company manages operations on a company-wide basis, thereby making determinations as to the allocation of resources as one segment. We manufacture and distribute private label food and beverages in North America. Our products are primarily shelf stable and share similar customers and distribution. The Chief Executive Officer, who has been identified as our Chief Operating Decision Maker ("CODM") allocates resources and assesses performance based upon discrete financial information at the consolidated level. We have one segment manager who reports directly to the CODM with incentive compensation based on aggregated consolidated results of the Company. The annual operating plan is prepared and approved by the CODM based on consolidated results of the Company. We operate our business with a centralized financial systems infrastructure, and we share centralized resources for sales, procurement, and general and administrative activities. The majority of our manufacturing plants each produce one food or beverage category. Refer to Note 19 for disaggregation of revenue for additional information of our principal products sold.

RECENT ACCOUNTING PRONOUNCEMENT

RECENT ACCOUNTING PRONOUNCEMENTS	6 Months Ended
	Jun. 30, 2024
Accounting Changes and Error Corrections [Abstract]
RECENT ACCOUNTING PRONOUNCEMENTS	2. RECENT ACCOUNTING PRONOUNCEMENTS Not yet adopted In November 2023, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures, to update reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses and information used to assess segment performance. The amendments are effective for fiscal years beginning after December 15, 2023, and for interim periods within fiscal years beginning after December 15, 2024, with early adoption permitted. Upon adoption, the impact of ASU 2023-07 will be limited to certain notes to the Consolidated Financial Statements and therefore is not expected to have an impact on the Consolidated Financial Statements. In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures, to enhance the transparency and decision usefulness of income tax disclosures. The amendments are effective for annual periods beginning after December 15, 2024 on a prospective basis. Early adoption is permitted. Upon adoption, the impact of ASU 2023-09 will be limited to certain notes to the Consolidated Financial Statements and therefore is not expected to have an impact on the Consolidated Financial Statements.

GROWTH, REINVESTMENT, AND RESTR

GROWTH, REINVESTMENT, AND RESTRUCTURING PROGRAMS	6 Months Ended
	Jun. 30, 2024
Restructuring and Related Activities [Abstract]
GROWTH, REINVESTMENT, AND RESTRUCTURING PROGRAMS	3. GROWTH, REINVESTMENT, AND RESTRUCTURING PROGRAMS The Company’s Growth, Reinvestment, and Restructuring activities are part of an enterprise-wide transformation to build long-term sustainable growth and improve profitability for the Company. As part of our Growth, Reinvestment, and Restructuring Programs, we generally incur expenses that qualify as exit and disposal costs under U.S. GAAP. These include severance and employee separation costs and other exit costs. Severance and employee separation costs primarily relate to cash severance, non-cash severance, including accelerated equity award compensation expense, and other termination benefits. Other exit costs typically relate to lease and contract terminations. We also incur expenses that are an integral component of, and directly attributable to, our Growth, Reinvestment, and Restructuring activities, which do not qualify as exit and disposal costs under U.S. GAAP. These include asset-related costs and other costs. Asset-related costs primarily relate to accelerated depreciation and certain long-lived asset impairments. Other costs primarily relate to start-up costs of new facilities, consulting and professional fees, retention costs, organizational redesign, information technology system implementation, asset relocation costs, and costs to exit facilities or production. Strategic Growth Initiatives The Company began executing on its Strategic Growth Initiatives in 2021 and completed the program in 2023. These initiatives were designed to invest in our commercial organization, adapt the supply chain to better support long-term growth opportunities, and further enable the Company to build greater depth in growth categories. The total costs within this program were $115.5 million, comprised of consulting and professional fees, employee-related costs, and investment in information technology. The costs incurred for the three and six months ended June 30, 2023 were $3.4 million and $10.4 million, respectively. Facility Closures During the fourth quarter of 2023, the Company completed the closure of its Dallas, Texas Coffee facility in connection with the integration of the Coffee Roasting Capability and transitioned production from Dallas to its Northlake, Texas facility during the first half of 2024. Additionally, during the first quarter of 2024, the Company announced the closure of its Sioux Falls, South Dakota facility in connection with the integration of the Seasoned Pretzel Capability and has transitioned production from Sioux Falls to its Hanover, Pennsylvania facility. The Company expects the total costs related to these facility closures and associated distribution network optimization to be approximately $15.0 million, and the cumulative costs incurred to date are $9.4 million. The costs incurred for the three and six months ended June 30, 2024 were $2.5 million and $4.4 million, respectively. Below is a summary of costs by type associated with the Growth, Reinvestment, and Restructuring Programs: Three Months Ended Six Months Ended 2024 2023 2024 2023 (In millions) Employee-related $ 4.7 $ 3.4 $ 7.3 $ 7.7 Other costs 6.8 5.5 10.9 16.5 Total $ 11.5 $ 8.9 $ 18.2 $ 24.2 For the three and six months ended June 30, 2024 and 2023, employee-related costs primarily consisted of severance and retention; and other costs primarily consisted of consulting services and third party costs related to facility plant closures. Employee-related and other costs are recognized in Other operating expense (income), net of the Condensed Consolidated Statements of Operations. The table below presents the exit cost liabilities related to severance activity for the Growth, Reinvestment, and Restructuring Programs as of June 30, 2024: Severance (In millions) Balance as of December 31, 2023 $ 5.4 Expenses recognized 4.3 Cash payments (4.5) Balance as of June 30, 2024 $ 5.2

RECEIVABLES SALES PROGRAM

RECEIVABLES SALES PROGRAM	6 Months Ended
	Jun. 30, 2024
Receivables [Abstract]
RECEIVABLES SALES PROGRAM	4. RECEIVABLES SALES PROGRAM The Company has entered into agreements to sell certain trade accounts receivable to unrelated, third-party financial institutions at a discount (collectively, the "Receivables Sales Program"). The agreements can be terminated by either party with 60 days' notice. The Receivables Sales Program is used by the Company to manage liquidity in a cost-effective manner. The Company has an insignificant retained interest in the receivables sold under the Receivables Sales Program; however, under the agreements, the Company does have collection and administrative responsibilities for the sold receivables. Under the Receivables Sales Program, the maximum amount of outstanding accounts receivables sold at any time is $500.0 million. The following table includes the outstanding amount of accounts receivable sold under the Receivables Sales Program and the receivables collected from customers and not remitted to the financial institutions: June 30, 2024 December 31, 2023 (In millions) Outstanding accounts receivable sold $ 230.6 $ 343.8 Receivables collected and not remitted to financial institutions 142.6 200.2 Receivables sold under the Receivables Sales Program are derecognized from the Company's Condensed Consolidated Balance Sheet at the time of the sale and the proceeds from such sales are reflected as a component of the change in receivables in the operating activities section of the Condensed Consolidated Statements of Cash Flows. The receivables collected and not remitted to financial institutions are included in Accounts payable in the Condensed Consolidated Balance Sheets. The following table summarizes the cash flows of the Company's accounts receivable associated with the Receivables Sales Program: Six Months Ended June 30, 2024 2023 (In millions) Receivables sold $ 495.5 $ 923.0 Receivables collected and remitted to financial institutions (608.7) (964.7) The loss on sale of receivables represents the discount taken by third-party financial institutions and was $1.9 million and $3.3 million for the three months ended June 30, 2024 and 2023, respectively, and $3.9 million and $6.6 million for the six months ended June 30, 2024 and 2023, respectively, and is included in Other (income) expense, net in the Condensed Consolidated Statements of Operations. The Company has not recognized any servicing assets or liabilities as of June 30, 2024 or December 31, 2023, as the fair value of the servicing arrangement as well as the fees earned were not material to the financial statements.

INVENTORIES

INVENTORIES	6 Months Ended
	Jun. 30, 2024
Inventory Disclosure [Abstract]
INVENTORIES	5. INVENTORIES June 30, 2024 December 31, 2023 (In millions) Raw materials and supplies $ 242.7 $ 245.4 Finished goods 349.7 288.6 Total inventories $ 592.4 $ 534.0

ACQUISITIONS AND DIVESTITURES

ACQUISITIONS AND DIVESTITURES	6 Months Ended
	Jun. 30, 2024
Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract]
ACQUISITIONS AND DIVESTITURES	6. ACQUISITIONS AND DIVESTITURES Acquisitions Acquisition of Pickle Branded Assets On January 2, 2024, the Company completed the acquisition of pickle branded assets, including Bick’s pickles, Habitant pickled beets, Woodman’s horseradish, and McLarens pickled onions brands (the "Pickle Branded Assets"), from The J.M. Smucker Co., a North American producer of coffee, consumer foods, dog snacks, and cat food. The acquisition is consistent with our strategy and builds depth in our Pickles category by expanding into Canada. The total purchase consideration transferred was approximately $25.9 million in cash. The purchase of the Pickle Branded Assets was accounted for as an Asset Acquisition. The following table summarizes the purchase price allocation of the fair value of net tangible and intangible assets acquired: (In millions) Cash transferred at close $ 20.0 Purchase price adjustment 5.9 Total consideration transferred $ 25.9 Allocation of consideration to assets acquired: Inventories $ 25.2 Trademarks 0.7 Total purchase price $ 25.9 Intangible assets acquired included trademarks with an estimated life of 10 years. Acquisition of Coffee Roasting Capability On June 30, 2023, the Company completed the acquisition of the Direct Ship coffee business and its Northlake, Texas coffee facility (the "Coffee Roasting Capability") from Farmer Brothers Company, a national coffee roaster, wholesaler, equipment servicer and distributor of coffee, tea, and culinary products. The acquisition brings roasting, grinding, flavoring and blending capabilities to the Company's portfolio to complement the Company's existing single-serve pod and ready-to-drink coffee businesses. The purchase consideration consisted of approximately $90.6 million in cash. The acquisition was funded by borrowings from the Company’s $500.0 million Revolving Credit Facility. The following table summarizes the final purchase price allocation of the fair value of net tangible assets acquired: (In millions) Cash transferred at close $ 92.2 Purchase price adjustment (1.6) Total consideration transferred $ 90.6 Allocation of consideration to assets acquired: Inventories $ 29.8 Property, plant, and equipment, net 60.8 Total purchase price $ 90.6 Real property and personal property fair values were determined using the cost and market approaches. Acquisition of Seasoned Pretzel Capability On April 1, 2023, the Company completed the acquisition of a seasoned pretzel capability for a total purchase price of $14.0 million, which included the recognition of $5.4 million within Goodwill in the Condensed Consolidated Balance Sheets based on the final purchase price allocation. The purchase price consisted of approximately $10.0 million in cash and a deferred payment of approximately $4.0 million, which was paid in the third quarter of 2024. The deferred payment was recognized within Accrued expenses in the Condensed Consolidated Balance Sheets as of June 30, 2024. The acquisition is in line with our strategy to build category leadership, depth and capabilities to drive profitable growth. Discontinued Operations Sale of the Snack Bars Business On September 29, 2023, the Company completed the sale of its Snack Bars business (the "Snack Bars Transaction" or the "Snack Bars Business") to John B. Sanfilippo & Son, Inc. for approximately $58.7 million in cash. The Snack Bars Business consists of manufacturing, packaging, and selling snack bars and operated in the Lakeville, Minnesota plant. The Snack Bars Transaction further advances the Company's enterprise-wide transformation to simplify its business and build depth around a focused group of high-growth categories. The Company entered into a Transition Services Agreement ("TSA") with John B. Sanfilippo & Son, Inc., which is designed to ensure and facilitate an orderly transfer of business operations. The TSA ended in the first quarter of 2024. TSA income was recognized as services were performed, and the income received under the TSA was $0.1 million for the first quarter of 2024. The TSA income is classified within Other operating expense (income), net in the Company's Condensed Consolidated Statements of Operations. Sale of a Significant Portion of the Meal Preparation Business On October 3, 2022, the Company completed the sale of a significant portion of the Company’s Meal Preparation business (the "Meal Preparation Business") to two entities affiliated with Investindustrial: Rushmore Investment III LLC, a Delaware limited liability company ("US Buyer") and 1373978 B.C., ULC, a British Columbia unlimited liability company ("CA Buyer" and together with US Buyer, the "Buyer"). The closing purchase price was $963.8 million, and during the second quarter of 2023, a $20.3 million adjustment to the purchase price was finalized, resulting in a final purchase price of $943.5 million. The final purchase price consisted of approximately $522.6 million in cash and approximately $420.9 million in a five-year secured Seller Promissory Note. During the three and six months ended June 30, 2023, the Company recognized $10.7 million and $21.4 million, respectively, within Interest income in the Condensed Consolidated Statements of Operations related to the Seller Promissory Note. The Seller Promissory Note was repaid on October 19, 2023, and no interest income was recognized in 2024. Additionally, the Company recognized an expected loss on disposal adjustment of $(1.0) million and $3.5 million for the three and six months ended June 30, 2023, respectively. The Company entered into a Transition Services Agreement ("TSA") with the Buyer, which is designed to ensure and facilitate an orderly transfer of business operations. All TSA services were exited during the second quarter of 2024. TSA income is recognized as services are performed, and the income received under the TSA was $0.1 million and $11.9 million for the three months ended June 30, 2024 and 2023, respectively, and $0.5 million and $25.3 million for the six months ended June 30, 2024 and 2023, respectively. The TSA income is classified within Other operating expense (income), net in the Company's Condensed Consolidated Statements of Operations. The Company has reflected both of these transactions as discontinued operations. Unless otherwise noted, amounts and disclosures throughout these Notes to Condensed Consolidated Financial Statements relate to the Company's continuing operations. Results of discontinued operations are as follows: Three Months Ended Six Months Ended 2023 2023 (In millions) Net sales $ 40.1 $ 80.9 Cost of sales 40.5 82.6 Selling, general, administrative and other operating expenses 0.4 0.7 (Gain) loss on sale of business (1.0) 3.5 Operating income (loss) from discontinued operations $ 0.2 $ (5.9) Interest and other income — (1.1) Income tax benefit (0.7) (0.5) Net income (loss) from discontinued operations $ 0.9 $ (4.3)

PROPERTY, PLANT, AND EQUIPMENT

PROPERTY, PLANT, AND EQUIPMENT	6 Months Ended
	Jun. 30, 2024
Property, Plant and Equipment [Abstract]
PROPERTY, PLANT, AND EQUIPMENT	7. PROPERTY, PLANT, AND EQUIPMENT June 30, 2024 December 31, 2023 (In millions) Land $ 35.2 $ 35.2 Buildings and improvements 378.6 367.2 Machinery and equipment 1,051.4 1,042.5 Construction in progress 103.7 97.4 Total 1,568.9 1,542.3 Less accumulated depreciation (850.2) (804.7) Property, plant, and equipment, net $ 718.7 $ 737.6 Depreciation expense was $24.1 million and $22.5 million for the three months ended June 30, 2024 and 2023, respectively and $48.6 million and $45.6 million for the six months ended June 30, 2024 and 2023, respectively. Asset Impairment We evaluate property, plant, and equipment, operating lease right-of-use assets, and finite lived intangible assets for impairment when circumstances indicate that their carrying values may not be recoverable. Indicators of impairment include deteriorations in operating cash flows, the anticipated sale or disposal of an asset group, and other significant changes in business conditions. During the second quarter of 2024, as a result of forecasted cash flow losses, the Company made the decision to exit the Ready-to-drink ("RTD") business. As a result, the Company performed a recoverability assessment over the RTD asset group in the second quarter of 2024, which indicated that the asset group was not recoverable, and we were required to determine the fair value of the business. Our fair value assessment indicated that the carrying value was in excess of the fair value, and an impairment of $19.3 million of property, plant, and equipment was recognized in our Ready-to-drink beverages asset group. The impairment charge is included in Asset impairment in the Condensed Consolidated Statements of Operations. Impairment charges are measured by comparing the carrying value of the asset group to its estimated fair value. The fair value of the asset group was based on expected future cash flows using Level 3 inputs under ASC 820. We can provide no assurance regarding the prospect of additional impairment charges in future periods.

GOODWILL AND INTANGIBLE ASSETS

GOODWILL AND INTANGIBLE ASSETS	6 Months Ended
	Jun. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL AND INTANGIBLE ASSETS	8. GOODWILL AND INTANGIBLE ASSETS Goodwill Changes in the carrying amount of goodwill, which include no accumulated impairment losses, for the six months ended June 30, 2024 are as follows: Goodwill (In millions) Balance at December 31, 2023 $ 1,824.7 Foreign currency exchange adjustments (2.4) Balance at June 30, 2024 $ 1,822.3 Intangible Assets The gross carrying amounts and accumulated amortization of intangible assets as of June 30, 2024 and December 31, 2023 are as follows: June 30, 2024 December 31, 2023 Gross Accumulated Net Gross Accumulated Net (In millions) Intangible assets with finite lives: Customer-related $ 547.9 $ (380.1) $ 167.8 $ 549.3 $ (364.1) $ 185.2 Trademarks 19.3 (16.5) 2.8 18.7 (15.9) 2.8 Formulas/recipes 15.5 (15.0) 0.5 15.5 (14.9) 0.6 Computer software 210.9 (152.7) 58.2 209.0 (146.2) 62.8 Total finite lived intangibles 793.6 (564.3) 229.3 792.5 (541.1) 251.4 Intangible assets with indefinite lives: Trademarks 6.0 — 6.0 6.0 — 6.0 Total intangible assets $ 799.6 $ (564.3) $ 235.3 $ 798.5 $ (541.1) $ 257.4

INCOME TAXES

INCOME TAXES	6 Months Ended
	Jun. 30, 2024
Income Tax Disclosure [Abstract]
INCOME TAXES	9. INCOME TAXES Income taxes were recognized at effective rates of 20.1% and 21.5% for the three and six months ended June 30, 2024, respectively, compared to 28.7% and 27.6% for the three and six months ended June 30, 2023, respectively. The change in the Company's effective tax rate for the three and six months ended June 30, 2024 compared to 2023 is primarily driven by changes in the amount of executive compensation that is not deductible for tax purposes. Our effective tax rate may change from period to period based on recurring and non-recurring factors, including the jurisdictional mix of earnings, enacted tax legislation, state income taxes, settlement of tax audits, and the expiration of the statute of limitations in relation to unrecognized tax benefits. Management estimates that it is reasonably possible that the total amount of unrecognized tax benefits could decrease by as much as $1.0 million within the next 12 months, primarily as a result of the lapsing of statutes of limitations. Approximately all of the $1.0 million could affect net income when settled. The timing of cash settlement, if any, cannot be reasonably estimated for uncertain tax benefits.

LONG-TERM DEBT

LONG-TERM DEBT	6 Months Ended
	Jun. 30, 2024
Debt Disclosure [Abstract]
LONG-TERM DEBT	10. LONG-TERM DEBT June 30, 2024 December 31, 2023 (In millions) Term Loan A $ 316.4 $ 316.4 Term Loan A-1 588.6 588.6 2028 Notes 500.0 500.0 Finance leases 1.8 0.6 Total outstanding debt 1,406.8 1,405.6 Deferred financing costs (8.0) (9.2) Less current portion (0.6) (0.4) Total long-term debt $ 1,398.2 $ 1,396.0 Revolving Credit Facility — As of June 30, 2024, the Company had remaining availability of $471.0 million under its $500.0 million Revolving Credit Facility, and there were $29.0 million in letters of credit under the Revolving Credit Facility that were issued but undrawn, which have been included as a reduction to the calculation of available credit. Under the Credit Agreement, the Revolving Credit Facility matures on March 26, 2026. Fair Value —

STOCKHOLDERS' EQUITY

STOCKHOLDERS' EQUITY	6 Months Ended
	Jun. 30, 2024
Equity [Abstract]
STOCKHOLDERS' EQUITY	11. STOCKHOLDERS' EQUITY Share Repurchase Authorization — On November 2, 2017, the Company announced that the Board of Directors adopted a stock repurchase program. The stock repurchase program authorizes the Company to repurchase up to $400 million of the Company's common stock at any time, or from time to time. Any repurchases under the program may be made by means of open market transactions, negotiated block transactions, or otherwise, including pursuant to a repurchase plan administered in accordance with Rules 10b5-1 and 10b-18 under the Securities Exchange Act of 1934, as amended (the "Exchange Act"). The size and timing of any repurchases will depend on price, market and business conditions, and other factors. The Company has the ability to make discretionary repurchases up to an annual cap of $150 million, and $78.0 million remained available under under the $400 million total authorization of the stock repurchase program as of June 30, 2024. The stock repurchase program does not have an expiration date. Any shares repurchased will be held as treasury stock. The following table summarizes the Company's repurchases of its common stock: Three Months Ended Six Months Ended 2024 2023 2024 2023 (In millions, except per share data) Shares repurchased 1.3 — 2.5 — Weighted average price per share $ 35.81 $ — $ 36.20 $ — Total cost $ 44.8 $ — $ 88.7 $ — Excise tax (1) $ 0.4 $ — $ 0.8 $ — (1) The excise tax accrued in connection with the share repurchases was recorded as an adjustment to the cost basis of repurchased shares in treasury stock and within Accrued expenses on the Company’s Condensed Consolidated Balance Sheets as of June 30, 2024.

EARNINGS PER SHARE

EARNINGS PER SHARE	6 Months Ended
	Jun. 30, 2024
Earnings Per Share [Abstract]
EARNINGS PER SHARE	12. EARNINGS PER SHARE The following table summarizes the effect of the share-based compensation awards on the weighted average number of shares outstanding used in calculating diluted earnings (loss) per share: Three Months Ended Six Months Ended 2024 2023 2024 2023 (In millions) Weighted average common shares outstanding 52.3 56.4 53.0 56.3 Assumed exercise/vesting of equity awards (1) — 0.4 — 0.5 Weighted average diluted common shares outstanding 52.3 56.8 53.0 56.8 (1) For the three and six months ended June 30, 2024, the weighted average common shares outstanding is the same for the computations of both basic and diluted shares outstanding because the Company had a net loss from continuing operations for the period. Equity awards, excluded from our computation of diluted earnings per share because they were anti-dilutive, were 0.8 million and 0.6 million for the three and six months ended June 30, 2024, respectively, and 1.2 million for both the three and six months ended June 30, 2023.

STOCK-BASED COMPENSATION

STOCK-BASED COMPENSATION	6 Months Ended
	Jun. 30, 2024
Share-Based Payment Arrangement [Abstract]
STOCK-BASED COMPENSATION	13. STOCK-BASED COMPENSATION The Board of Directors adopted, and the Company's stockholders approved, the "TreeHouse Foods, Inc. Equity and Incentive Plan" (the "Plan"). Under the Plan, the Compensation Committee may grant awards of various types of compensation, including stock options, restricted stock, restricted stock units, performance shares, performance units, other types of stock-based awards, and other cash-based compensation. The maximum number of shares authorized to be awarded under the Plan is approximately 22.5 million as of June 30, 2024. Total compensation expense related to stock-based payments and the related income tax benefit recognized in Net (loss) income from continuing operations are as follows: Three Months Ended Six Months Ended 2024 2023 2024 2023 (In millions) (In millions) Compensation expense related to stock-based payments $ 5.3 $ 5.9 $ 11.0 $ 13.1 Related income tax benefit 1.2 0.8 2.6 1.7 All amounts below include continuing and discontinued operations. Stock Options — Stock options granted under the Plan during 2022 have a three-year vesting schedule, vest one-third on the second anniversary of the grant date and two-thirds on the third anniversary of the grant date, and expire ten years from the grant date. Stock options are generally only granted to employees and non-employee directors. The following table summarizes stock option activity during 2024: Employee Weighted Weighted Aggregate (In thousands) (In millions) Outstanding, at December 31, 2023 578 $ 64.20 5.1 $ — Expired (54) 80.55 Outstanding, at June 30, 2024 524 62.54 5.0 — Vested/expected to vest, at June 30, 2024 510 63.10 5.0 — Exercisable, at June 30, 2024 331 74.10 3.4 — Unrecognized compensation costs related to nonvested options totaled $1.3 million at June 30, 2024 and are expected to be recognized over a weighted average period of 0.9 years. Restricted Stock Units — Employee restricted stock unit awards generally vest based on the passage of time in approximately three equal installments on each of the first three Non-employee director restricted stock units generally vest on the first anniversary of the grant date. Certain non-employee directors have elected to defer receipt of their awards until either their departure from the Board of Directors or a specified date beyond the first anniversary of the grant date. The following table summarizes the restricted stock unit activity during the six months ended June 30, 2024: Employee Weighted Director Weighted (In thousands) (In thousands) Nonvested, at December 31, 2023 573 $ 41.57 45 $ 50.14 Granted 500 37.08 35 36.10 Vested (242) 41.20 (18) 51.87 Forfeited (87) 39.69 — — Nonvested, at June 30, 2024 744 38.90 62 41.73 Earned and deferred, at June 30, 2024 28 48.62 Three Months Ended Six Months Ended 2024 2023 2024 2023 (In millions) (In millions) Fair value of vested restricted stock units $ 1.0 $ 3.2 $ 9.8 $ 14.3 Tax benefit recognized from vested restricted stock units 0.2 0.7 1.6 2.3 Unrecognized compensation costs related to nonvested restricted stock units are approximately $25.9 million as of June 30, 2024 and will be recognized over a weighted average period of 2.1 years. The grant date fair value of the awards is equal to the Company's closing stock price on the grant date. Performance Units — Performance unit awards are granted to certain members of management. These awards contain both service and performance conditions, and for certain executive members of management, a market condition, in each case as described below. • For performance unit awards granted in 2021 through 2023, performance goals are set and measured annually with one-quarter of the units eligible to accrue for each year in the three-year performance period. Accrued shares are earned at the end of each performance period but remain subject to forfeiture until the third anniversary of the grant date. Additionally, for the cumulative three-year performance period, one-quarter of the units will accrue. For both the annual and cumulative shares, the earned shares are equal to the number of units granted multiplied by a predefined percentage generally between 0% and 200%, depending on the achievement of certain operating performance measures. • For performance unit awards granted in 2024, performance goals were established upfront and will be measured over a cumulative three-year performance period. The units will accrue each month, multiplied by a predefined percentage between 0% and 200%, depending on the achievement of certain operating performance measures. Accrued shares are not earned until the end of the full three-year performance period and remain subject to forfeiture until the third anniversary of the grant date. • For performance unit awards granted in 2021 through 2024, certain executive members of management received awards that were measured using a relative total shareholder return ("TSR") market condition over a three-year performance goal. The units will accrue, multiplied by a predefined percentage between 0% and 150% for years 2021 through 2023 and between 0% and 200% for 2024, for the relative TSR measure, depending on the achievement attainment over the three-year performance period based on the Company's absolute annualized TSR relative to the annualized TSR of a Peer Group. The fair value of the portion of the awards based on relative TSR was valued using a Monte Carlo simulation model with a grant-date fair value of $37.56 on approximately 35,800 units granted in 2024. • During the second quarter of 2022, the Company made grants to certain of the Company’s named executive officers and certain other executive officers of performance-based restricted stock units (the "PBRSU Awards"). The PBRSU Awards included a relative TSR market condition over a two-year performance period beginning on the date of grant. The units accrued over the two-year performance period and were multiplied by a predefined percentage between 0% to 450% for the relative TSR measure, depending on the achievement attainment over the two-year performance period based on the Company’s absolute annualized TSR relative to the annualized TSR of the S&P Food & Beverage Select Industry Index (the "Index"). The fair value of the awards was valued using a Monte Carlo simulation model with a weighted average grant-date fair value of $58.36 on approximately 239,300 units granted in 2022. The PBRSU Awards vested in the second quarter of 2024. Over the two-year performance period, the achievement attainment percentage was 0%, resulting in no payout of the awards. These awards will be converted to stock or cash, at the discretion of the Compensation Committee, generally, on the third anniversary of the grant date with the exception of the PBRSU Awards on the second anniversary. The Company intends to settle these awards in stock and has the shares available to do so. Performance unit awards with market conditions are valued using a Monte Carlo simulation model. Expected volatility is based on the historical volatility of the Company’s stock price, average Peer Group stock price, or the total return value of the Index. The risk-free rate is based on the U.S. Treasury yield curve in effect at the time of the grant with a term equivalent to the expected term of the award. The expected term is the time period from the grant date to the end of the performance period. The assumptions used in the Monte Carlo simulation were as follows: Six Months Ended 2024 Dividend yield 0 % Risk-free rate 4.50 % Expected volatility (TreeHouse Foods, Inc.) 34.34 % Expected volatility (Peer Group) 33.56 % Expected term (in years) 2.79 The following table summarizes the performance unit activity during the six months ended June 30, 2024: Performance Weighted (In thousands) Nonvested, at December 31, 2023 534 $ 47.44 Granted 143 36.95 Vested (45) 43.45 Forfeited (244) 56.81 Nonvested, at June 30, 2024 388 38.09 Three Months Ended Six Months Ended 2024 2023 2024 2023 (In millions) (In millions) Fair value of vested performance units $ 0.1 $ 1.3 $ 1.8 $ 5.0 Tax benefit recognized from performance units vested — — 0.1 0.4 Unrecognized compensation costs related to nonvested performance units are estimated to be approximately $7.8 million as of June 30, 2024 and are expected to be recognized over a weighted average period of 1.7 years. The fair value of the portion of the awards granted based on market conditions were valued using a Monte Carlo simulation model. For other awards, the grant date fair value is equal to the Company's closing stock price on the date of grant.

ACCUMULATED OTHER COMPREHENSIVE

ACCUMULATED OTHER COMPREHENSIVE LOSS	6 Months Ended
	Jun. 30, 2024
Equity [Abstract]
ACCUMULATED OTHER COMPREHENSIVE LOSS	14. ACCUMULATED OTHER COMPREHENSIVE LOSS Accumulated other comprehensive loss consists of the following components, all of which are net of tax: Foreign Unrecognized Accumulated (In millions) Balance at December 31, 2022 $ (87.0) $ 3.3 $ (83.7) Other comprehensive income before reclassifications 2.2 — 2.2 Reclassifications from accumulated other comprehensive loss (2) — 0.1 0.1 Other comprehensive income 2.2 0.1 2.3 Balance at June 30, 2023 $ (84.8) $ 3.4 $ (81.4) Balance at December 31, 2023 $ (84.2) $ 8.1 $ (76.1) Other comprehensive loss (3.9) — (3.9) Balance at June 30, 2024 $ (88.1) $ 8.1 $ (80.0) (1) The tax impact of the foreign currency translation adjustment and the unrecognized pension and postretirement benefits reclassification was insignificant for the three and six months ended June 30, 2024 and 2023. (2) Refer to Note 15 for additional information regarding these reclassifications.

EMPLOYEE RETIREMENT AND POSTRET

EMPLOYEE RETIREMENT AND POSTRETIREMENT BENEFITS	6 Months Ended
	Jun. 30, 2024
Retirement Benefits [Abstract]
EMPLOYEE RETIREMENT AND POSTRETIREMENT BENEFITS	15. EMPLOYEE RETIREMENT AND POSTRETIREMENT BENEFITS Pension, Profit Sharing, and Postretirement Benefits — Certain employees and retirees participate in pension and other postretirement benefit plans. Employee benefit plan obligations and expenses included in the Condensed Consolidated Financial Statements are determined based on plan assumptions, employee demographic data, including years of service and compensation, benefits and claims paid, and employer contributions. The information below includes the activities of the Company's continuing and discontinued operations. Components of net periodic pension cost (benefit) are as follows: Three Months Ended Six Months Ended 2024 2023 2024 2023 (In millions) (In millions) Service cost $ 0.1 $ 0.1 $ 0.2 $ 0.2 Interest cost 2.6 3.1 5.2 6.3 Expected return on plan assets (2.7) (3.5) (5.4) (6.9) Amortization of unrecognized prior service cost — 0.1 — 0.1 Amortization of unrecognized net loss 0.1 0.1 0.2 0.2 Net periodic pension cost (benefit) $ 0.1 $ (0.1) $ 0.2 $ (0.1) Components of net periodic postretirement cost are as follows: Three Months Ended Six Months Ended 2024 2023 2024 2023 (In millions) (In millions) Interest cost $ 0.2 $ 0.2 $ 0.4 $ 0.4 Amortization of unrecognized net gain (0.1) (0.1) (0.2) (0.2) Net periodic postretirement cost $ 0.1 $ 0.1 $ 0.2 $ 0.2 The service cost components of net periodic pension and postretirement costs were recognized in Cost of sales and the other components were recognized in Other (income) expense, net in the Condensed Consolidated Statements of Operations.

OTHER OPERATING EXPENSE (INCOME

OTHER OPERATING EXPENSE (INCOME), NET	6 Months Ended
	Jun. 30, 2024
Other Income and Expenses [Abstract]
OTHER OPERATING EXPENSE (INCOME), NET	16. OTHER OPERATING EXPENSE (INCOME), NET The Company incurred other operating expense (income), net, for the three and six months ended June 30, 2024 and 2023, which consisted of the following: Three Months Ended Six Months Ended 2024 2023 2024 2023 (In millions) (In millions) Growth, reinvestment, and restructuring programs (1) $ 11.5 $ 8.9 $ 18.2 $ 24.2 TSA income (2) (0.1) (11.9) (0.6) (25.3) Other (0.2) 0.2 — 0.9 Other operating expense (income), net $ 11.2 $ (2.8) $ 17.6 $ (0.2) (1) Refer to Note 3 for more information. (2) Refer to Note 6 for more information.

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	6 Months Ended
	Jun. 30, 2024
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	17. COMMITMENTS AND CONTINGENCIES Shareholder Derivative Actions The Company, as nominal defendant, and certain of its former officers are parties to a consolidated shareholder derivative suit captioned Wells and the City of Ann Arbor Employees’ Retirement System v. Reed, et al. , Case Nos. 2016-CH-16359 and 2019-CH-06753 (Circuit Court of Cook County, Illinois). The consolidated lawsuit alleges that TreeHouse, under the authority and control of the individual defendants: (i) made certain false and misleading statements regarding the Company's business, operations, and future prospects; and (ii) failed to disclose that (a) the Company's private label business was underperforming; (b) the Company's Flagstone Foods business was underperforming; (c) the Company's acquisition strategy was underperforming; (d) the Company had overstated its full-year 2016 guidance; and (e) TreeHouse's statements lacked reasonable basis. The complaints allege, among other things, that these actions artificially inflated the market price of TreeHouse common stock and resulted in harm to the Company. On August 26, 2022, plaintiffs in the consolidated Wells case filed a second consolidated amended complaint, which was dismissed in its entirety with prejudice on March 15, 2023. The plaintiffs filed a notice of appeal on March 16, 2023. On March 22, 2024, the Appellate Court reversed the state trial court’s dismissal of the consolidated amended complaint and remanded to the state trial court for further proceedings. Other Claims In addition, the Company is party in the ordinary course of business to certain claims, litigation, audits, and investigations. The Company will record an accrual for a loss contingency when it is probable that a loss has been incurred and the amount of the loss can be reasonably estimated. The Company believes it has established adequate accruals for liabilities that are probable and reasonably estimable that may be incurred in connection with any such currently pending or threatened matter. In the Company's opinion, the eventual resolution of such matters, either individually or in the aggregate, is not expected to have a material impact on the Company's financial position, results of operations, or cash flows. However, litigation is inherently unpredictable and resolutions or dispositions of claims or lawsuits by settlement or otherwise could have an adverse impact on our financial position, results of operations or cash flows for the reporting period in which any such resolution or disposition occurs. In February 2014, TreeHouse, along with its 100% owned subsidiaries, Bay Valley Foods, LLC and Sturm Foods, Inc., filed suit against Keurig Dr. Pepper Inc.'s wholly-owned subsidiary, Keurig Green Mountain ("KGM"), in the U.S. District Court for the Southern District of New York captioned TreeHouse Foods, Inc. et al. v. Green Mountain Coffee Roasters, Inc. et al . asserting claims under the federal antitrust laws, various state antitrust laws and unfair competition statutes, contending that KGM had monopolized alleged markets for single serve coffee brewers and single serve coffee pods. The Company is seeking monetary damages, declaratory relief, injunctive relief, and attorneys' fees. The matter remains pending, with summary judgment, motions to exclude certain expert opinions, and discovery sanctions motions fully briefed. On March 28, 2022, the Magistrate Judge issued a non-public Opinion and Order granting in part and denying in part the TreeHouse sanctions motion against KGM and denying the KGM sanctions motion against TreeHouse. KGM has appealed a portion of the Opinion and Order awarding sanctions to the Company. Most recently, the Judge appointed a Special Master to resolve disputes about whether certain portions of the case record could be made public. The Special Master made the last of his decisions on these disputes on January 5, 2024, and the Judge adopted all of the Special Master’s decisions on March 24, 2024. On March 24, 2024, the District Court Judge affirmed the Special Master’s Reports and Recommendations and the parties have now filed the summary judgment record on the public record consistent with the Court’s Order. KGM is denying the allegations made by the Company in the litigation. The Company has not recorded any amount in its Condensed Consolidated Financial Statements as of June 30, 2024.

DERIVATIVE INSTRUMENTS

DERIVATIVE INSTRUMENTS	6 Months Ended
	Jun. 30, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVE INSTRUMENTS	18. DERIVATIVE INSTRUMENTS Interest Rate Swap Agreements - The Company manages its exposure to changes in interest rates by optimizing the use of variable-rate and fixed-rate debt and by utilizing interest rate swaps to hedge our exposure to changes in interest rates, to reduce the volatility of our financing costs, and to achieve a desired proportion of fixed versus floating-rate debt, based on current and projected market conditions. The Company has entered into long-term interest rate swap agreements to lock into a fixed interest rate base that have a notional value of $1,475.0 million as of June 30, 2024 and $1,175.0 million as of December 31, 2023. Under the terms of the agreements, the weighted average fixed interest rate base for the $875.0 million of interest rate swaps maturing on February 28, 2025 is approximately 2.91%, and for the $600.0 million of interest rate swaps effective February 28, 2025 through February 29, 2028, is approximately 3.68%. In July 2024, the Company entered into additional interest rate swap agreements to lock into a fixed interest rate base. The agreements have a notional value of $275.0 million, effective February 28, 2025 through February 29, 2028. Under the terms of the agreements entered in July 2024, the weighted average fixed interest rate base for the $275.0 million of interest rate swaps is approximately 3.70%. Commodity Contracts - Certain commodities the Company uses in the production and distribution of its products are exposed to market price risk. The Company utilizes derivative contracts to manage this risk. The majority of commodity forward contracts are not derivatives, and those that are generally qualify for the normal purchases and normal sales scope exception under the guidance for derivative instruments and hedging activities and, therefore, are not subject to its provisions. For derivative commodity contracts that do not qualify for the normal purchases and normal sales scope exception, the Company accounts for the contracts as derivatives. The Company's derivative commodity contracts may include contracts for diesel, oil, plastics, resin, and other commodity contracts that do not meet the requirements for the normal purchases and normal sales scope exception. Diesel contracts are used to manage the Company's risk associated with the underlying cost of diesel fuel used to deliver products. Contracts for oil, plastics, and resin are used to manage the Company's risk associated with the underlying commodity cost of a significant component used in packaging materials. Other commodity contracts that are derivatives that do not meet the normal purchases and normal sales scope exception are used to manage the price risk associated with raw material costs. As of June 30, 2024 and December 31, 2023, the notional value of the commodity contracts outstanding was $98.4 million and $24.4 million, respectively. These commodity contracts have maturities expiring throughout 2024 and 2025 as of June 30, 2024. The following table identifies the fair value of each derivative instrument: Balance Sheet Location June 30, 2024 December 31, 2023 (In millions) Asset derivatives Commodity contracts Prepaid expenses and other current assets $ 3.8 $ 1.9 Interest rate swap agreements Prepaid expenses and other current assets 13.6 — Interest rate swap agreements Other assets, net 4.5 17.9 $ 21.9 $ 19.8 Liability derivatives Commodity contracts Accrued expenses $ 0.8 $ 0.8 Interest rate swap agreements Accrued expenses 0.8 7.2 $ 1.6 $ 8.0 The fair values of the commodity contracts and interest rate swap agreements are determined using Level 2 inputs. Level 2 inputs are inputs other than quoted market prices that are observable for an asset or liability, either directly or indirectly. The fair values of the commodity contracts and interest rate swap agreements are based on an analysis comparing the contract rates to the market rates at the balance sheet date. We recognized the following gains and losses on our derivative contracts in the Condensed Consolidated Statements of Operations: Location of Gain (Loss) Three Months Ended Six Months Ended Recognized in Net (Loss) Income 2024 2023 2024 2023 (In millions) (In millions) Mark-to-market unrealized gain (loss) Commodity contracts Other (income) expense, net $ 2.3 $ 0.4 $ 1.9 $ 0.7 Interest rate swap agreements Other (income) expense, net (0.8) 9.0 6.6 2.8 Total unrealized gain $ 1.5 $ 9.4 $ 8.5 $ 3.5 Realized gain (loss) Commodity contracts Manufacturing-related to Cost of sales and transportation-related to Selling and distribution $ 2.3 $ — $ 3.8 $ — Interest rate swap agreements Interest expense 5.6 4.6 11.2 8.2 Total realized gain $ 7.9 $ 4.6 $ 15.0 $ 8.2 Total gain $ 9.4 $ 14.0 $ 23.5 $ 11.7

DISAGGREGATION OF REVENUE

DISAGGREGATION OF REVENUE	6 Months Ended
	Jun. 30, 2024
Segment Reporting [Abstract]
DISAGGREGATION OF REVENUE	19. DISAGGREGATION OF REVENUE The principal products that comprise our different product category groups are as follows: Product Category Group Principal Products Snacking Candy; cookies; crackers; in-store bakery items; pretzels; and frozen griddle items Beverages & drink mixes Broths/stocks; non-dairy creamer; powdered beverages and other blends; ready-to-drink beverages; coffee; and tea Grocery Cheese & pudding; hot cereal; pickles; and refrigerated dough Revenue disaggregated by product category groups is as follows: Three Months Ended Six Months Ended 2024 2023 2024 2023 (In millions) (In millions) Snacking $ 308.9 $ 321.6 $ 623.7 $ 639.4 Beverages & drink mixes 244.5 243.9 512.2 535.2 Grocery 235.1 238.0 473.3 482.9 Total net sales $ 788.5 $ 803.5 $ 1,609.2 $ 1,657.5 Revenue disaggregated by sales channel is as follows: Three Months Ended Six Months Ended 2024 2023 2024 2023 (In millions) (In millions) Retail grocery $ 607.5 $ 627.2 $ 1,257.4 $ 1,306.4 Co-manufacturing 104.2 107.8 204.2 217.2 Food-away-from-home and other 76.8 68.5 147.6 133.9 Total net sales $ 788.5 $ 803.5 $ 1,609.2 $ 1,657.5

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
Pay vs Performance Disclosure
Net (loss) income	$ (16.7)	$ (11.7)	$ 23.3	$ 15.2	$ (28.4)	$ 38.5

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Jun. 30, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

BASIS OF PRESENTATION (Policies

BASIS OF PRESENTATION (Policies)	6 Months Ended
	Jun. 30, 2024
Accounting Policies [Abstract]
Reclassification	Reclassification Certain prior year amounts have been reclassified to conform to the current year presentation. Specifically, Additions to property, plant, and equipment and Additions to intangible assets have been condensed into Capital expenditures within the Cash flows from investing activities section of the Condensed Consolidated Statements of Cash Flows. Additionally, Accrued purchase of property and equipment and Accrued other intangible assets have been condensed into Capital expenditures incurred but not yet paid within the Non-cash investing activities section of the Condensed Consolidated Statements of Cash Flows.
Use of Estimates	Use of Estimates The preparation of our Condensed Consolidated Financial Statements in conformity with GAAP requires management to use judgment to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosures of contingent assets and liabilities at the date of the Condensed Consolidated Financial Statements, and the reported amounts of net sales and expenses during the reporting period. Actual results could differ from these estimates.
Segment Information	Segment Information
Recently Adopted Accounting Pronouncements Not yet adopted	Not yet adopted In November 2023, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures, to update reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses and information used to assess segment performance. The amendments are effective for fiscal years beginning after December 15, 2023, and for interim periods within fiscal years beginning after December 15, 2024, with early adoption permitted. Upon adoption, the impact of ASU 2023-07 will be limited to certain notes to the Consolidated Financial Statements and therefore is not expected to have an impact on the Consolidated Financial Statements. In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures, to enhance the transparency and decision usefulness of income tax disclosures. The amendments are effective for annual periods beginning after December 15, 2024 on a prospective basis. Early adoption is permitted. Upon adoption, the impact of ASU 2023-09 will be limited to certain notes to the Consolidated Financial Statements and therefore is not expected to have an impact on the Consolidated Financial Statements.

GROWTH, REINVESTMENT, AND RES_2

GROWTH, REINVESTMENT, AND RESTRUCTURING PROGRAMS (Tables)	6 Months Ended
	Jun. 30, 2024
Restructuring and Related Activities [Abstract]
Schedule of Aggregate Expenses Incurred Associated with Facility Closure	Below is a summary of costs by type associated with the Growth, Reinvestment, and Restructuring Programs: Three Months Ended Six Months Ended 2024 2023 2024 2023 (In millions) Employee-related $ 4.7 $ 3.4 $ 7.3 $ 7.7 Other costs 6.8 5.5 10.9 16.5 Total $ 11.5 $ 8.9 $ 18.2 $ 24.2
Schedule of Activity of Restructuring Program Liabilities	The table below presents the exit cost liabilities related to severance activity for the Growth, Reinvestment, and Restructuring Programs as of June 30, 2024: Severance (In millions) Balance as of December 31, 2023 $ 5.4 Expenses recognized 4.3 Cash payments (4.5) Balance as of June 30, 2024 $ 5.2

RECEIVABLES SALES PROGRAM (Tabl

RECEIVABLES SALES PROGRAM (Tables)	6 Months Ended
	Jun. 30, 2024
Receivables [Abstract]
Schedule of Receivable Sales Program	The following table includes the outstanding amount of accounts receivable sold under the Receivables Sales Program and the receivables collected from customers and not remitted to the financial institutions: June 30, 2024 December 31, 2023 (In millions) Outstanding accounts receivable sold $ 230.6 $ 343.8 Receivables collected and not remitted to financial institutions 142.6 200.2 The following table summarizes the cash flows of the Company's accounts receivable associated with the Receivables Sales Program: Six Months Ended June 30, 2024 2023 (In millions) Receivables sold $ 495.5 $ 923.0 Receivables collected and remitted to financial institutions (608.7) (964.7)

INVENTORIES (Tables)

INVENTORIES (Tables)	6 Months Ended
	Jun. 30, 2024
Inventory Disclosure [Abstract]
Schedule of Inventories	June 30, 2024 December 31, 2023 (In millions) Raw materials and supplies $ 242.7 $ 245.4 Finished goods 349.7 288.6 Total inventories $ 592.4 $ 534.0

ACQUISITIONS AND DIVESTITURES (

ACQUISITIONS AND DIVESTITURES (Tables)	6 Months Ended
	Jun. 30, 2024
Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract]
Schedule of Business Acquisitions Consideration	The following table summarizes the purchase price allocation of the fair value of net tangible and intangible assets acquired: (In millions) Cash transferred at close $ 20.0 Purchase price adjustment 5.9 Total consideration transferred $ 25.9 Allocation of consideration to assets acquired: Inventories $ 25.2 Trademarks 0.7 Total purchase price $ 25.9 The following table summarizes the final purchase price allocation of the fair value of net tangible assets acquired: (In millions) Cash transferred at close $ 92.2 Purchase price adjustment (1.6) Total consideration transferred $ 90.6 Allocation of consideration to assets acquired: Inventories $ 29.8 Property, plant, and equipment, net 60.8 Total purchase price $ 90.6
Schedule of Preliminary Purchase Price Allocation of Fair value of Net Tangible Assets Acquired	The following table summarizes the purchase price allocation of the fair value of net tangible and intangible assets acquired: (In millions) Cash transferred at close $ 20.0 Purchase price adjustment 5.9 Total consideration transferred $ 25.9 Allocation of consideration to assets acquired: Inventories $ 25.2 Trademarks 0.7 Total purchase price $ 25.9 The following table summarizes the final purchase price allocation of the fair value of net tangible assets acquired: (In millions) Cash transferred at close $ 92.2 Purchase price adjustment (1.6) Total consideration transferred $ 90.6 Allocation of consideration to assets acquired: Inventories $ 29.8 Property, plant, and equipment, net 60.8 Total purchase price $ 90.6
Schedule of Discontinued Operations	Results of discontinued operations are as follows: Three Months Ended Six Months Ended 2023 2023 (In millions) Net sales $ 40.1 $ 80.9 Cost of sales 40.5 82.6 Selling, general, administrative and other operating expenses 0.4 0.7 (Gain) loss on sale of business (1.0) 3.5 Operating income (loss) from discontinued operations $ 0.2 $ (5.9) Interest and other income — (1.1) Income tax benefit (0.7) (0.5) Net income (loss) from discontinued operations $ 0.9 $ (4.3)

PROPERTY, PLANT, AND EQUIPMENT

PROPERTY, PLANT, AND EQUIPMENT (Tables)	6 Months Ended
	Jun. 30, 2024
Property, Plant and Equipment [Abstract]
Schedule of Property, Plant, and Equipment	June 30, 2024 December 31, 2023 (In millions) Land $ 35.2 $ 35.2 Buildings and improvements 378.6 367.2 Machinery and equipment 1,051.4 1,042.5 Construction in progress 103.7 97.4 Total 1,568.9 1,542.3 Less accumulated depreciation (850.2) (804.7) Property, plant, and equipment, net $ 718.7 $ 737.6

GOODWILL AND INTANGIBLE ASSETS

GOODWILL AND INTANGIBLE ASSETS (Tables)	6 Months Ended
	Jun. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Changes in Carrying Amount of Goodwill	Changes in the carrying amount of goodwill, which include no accumulated impairment losses, for the six months ended June 30, 2024 are as follows: Goodwill (In millions) Balance at December 31, 2023 $ 1,824.7 Foreign currency exchange adjustments (2.4) Balance at June 30, 2024 $ 1,822.3
Schedule of Gross Carrying Amounts and Accumulated Amortization of Intangible Assets, with Finite Lives	The gross carrying amounts and accumulated amortization of intangible assets as of June 30, 2024 and December 31, 2023 are as follows: June 30, 2024 December 31, 2023 Gross Accumulated Net Gross Accumulated Net (In millions) Intangible assets with finite lives: Customer-related $ 547.9 $ (380.1) $ 167.8 $ 549.3 $ (364.1) $ 185.2 Trademarks 19.3 (16.5) 2.8 18.7 (15.9) 2.8 Formulas/recipes 15.5 (15.0) 0.5 15.5 (14.9) 0.6 Computer software 210.9 (152.7) 58.2 209.0 (146.2) 62.8 Total finite lived intangibles 793.6 (564.3) 229.3 792.5 (541.1) 251.4 Intangible assets with indefinite lives: Trademarks 6.0 — 6.0 6.0 — 6.0 Total intangible assets $ 799.6 $ (564.3) $ 235.3 $ 798.5 $ (541.1) $ 257.4
Schedule of Gross Carrying Amounts of Intangible Assets, with Indefinite Lives	The gross carrying amounts and accumulated amortization of intangible assets as of June 30, 2024 and December 31, 2023 are as follows: June 30, 2024 December 31, 2023 Gross Accumulated Net Gross Accumulated Net (In millions) Intangible assets with finite lives: Customer-related $ 547.9 $ (380.1) $ 167.8 $ 549.3 $ (364.1) $ 185.2 Trademarks 19.3 (16.5) 2.8 18.7 (15.9) 2.8 Formulas/recipes 15.5 (15.0) 0.5 15.5 (14.9) 0.6 Computer software 210.9 (152.7) 58.2 209.0 (146.2) 62.8 Total finite lived intangibles 793.6 (564.3) 229.3 792.5 (541.1) 251.4 Intangible assets with indefinite lives: Trademarks 6.0 — 6.0 6.0 — 6.0 Total intangible assets $ 799.6 $ (564.3) $ 235.3 $ 798.5 $ (541.1) $ 257.4

LONG-TERM DEBT (Tables)

LONG-TERM DEBT (Tables)	6 Months Ended
	Jun. 30, 2024
Debt Disclosure [Abstract]
Schedule of Long-Term Debt	June 30, 2024 December 31, 2023 (In millions) Term Loan A $ 316.4 $ 316.4 Term Loan A-1 588.6 588.6 2028 Notes 500.0 500.0 Finance leases 1.8 0.6 Total outstanding debt 1,406.8 1,405.6 Deferred financing costs (8.0) (9.2) Less current portion (0.6) (0.4) Total long-term debt $ 1,398.2 $ 1,396.0

STOCKHOLDERS' EQUITY (Tables)

STOCKHOLDERS' EQUITY (Tables)	6 Months Ended
	Jun. 30, 2024
Equity [Abstract]
Schedule of Repurchases of Common Stock	The following table summarizes the Company's repurchases of its common stock: Three Months Ended Six Months Ended 2024 2023 2024 2023 (In millions, except per share data) Shares repurchased 1.3 — 2.5 — Weighted average price per share $ 35.81 $ — $ 36.20 $ — Total cost $ 44.8 $ — $ 88.7 $ — Excise tax (1) $ 0.4 $ — $ 0.8 $ —

EARNINGS PER SHARE (Tables)

EARNINGS PER SHARE (Tables)	6 Months Ended
	Jun. 30, 2024
Earnings Per Share [Abstract]
Schedule of Effect of Share-Based Compensation Awards on Weighted Average Number of Shares Outstanding Used in Calculating Diluted Earnings (Loss) Per Share	The following table summarizes the effect of the share-based compensation awards on the weighted average number of shares outstanding used in calculating diluted earnings (loss) per share: Three Months Ended Six Months Ended 2024 2023 2024 2023 (In millions) Weighted average common shares outstanding 52.3 56.4 53.0 56.3 Assumed exercise/vesting of equity awards (1) — 0.4 — 0.5 Weighted average diluted common shares outstanding 52.3 56.8 53.0 56.8 (1) For the three and six months ended June 30, 2024, the weighted average common shares outstanding is the same for the computations of both basic and diluted shares outstanding because the Company had a net loss from continuing operations for the period. Equity awards, excluded from our computation of diluted earnings per share because they were anti-dilutive, were 0.8 million and 0.6 million for the three and six months ended June 30, 2024, respectively, and 1.2 million for both the three and six months ended June 30, 2023.

STOCK-BASED COMPENSATION (Table

STOCK-BASED COMPENSATION (Tables)	6 Months Ended
	Jun. 30, 2024
Share-Based Payment Arrangement [Abstract]
Schedule of Total Compensation Expense	Total compensation expense related to stock-based payments and the related income tax benefit recognized in Net (loss) income from continuing operations are as follows: Three Months Ended Six Months Ended 2024 2023 2024 2023 (In millions) (In millions) Compensation expense related to stock-based payments $ 5.3 $ 5.9 $ 11.0 $ 13.1 Related income tax benefit 1.2 0.8 2.6 1.7
Schedule of Stock Option Activity	The following table summarizes stock option activity during 2024: Employee Weighted Weighted Aggregate (In thousands) (In millions) Outstanding, at December 31, 2023 578 $ 64.20 5.1 $ — Expired (54) 80.55 Outstanding, at June 30, 2024 524 62.54 5.0 — Vested/expected to vest, at June 30, 2024 510 63.10 5.0 — Exercisable, at June 30, 2024 331 74.10 3.4 —
Schedule of Restricted Stock Unit Activity	The following table summarizes the restricted stock unit activity during the six months ended June 30, 2024: Employee Weighted Director Weighted (In thousands) (In thousands) Nonvested, at December 31, 2023 573 $ 41.57 45 $ 50.14 Granted 500 37.08 35 36.10 Vested (242) 41.20 (18) 51.87 Forfeited (87) 39.69 — — Nonvested, at June 30, 2024 744 38.90 62 41.73 Earned and deferred, at June 30, 2024 28 48.62
Schedule of Highlight of Restricted Stock Unit Activity	Three Months Ended Six Months Ended 2024 2023 2024 2023 (In millions) (In millions) Fair value of vested restricted stock units $ 1.0 $ 3.2 $ 9.8 $ 14.3 Tax benefit recognized from vested restricted stock units 0.2 0.7 1.6 2.3
Schedule of Assumptions Used in the Monte Carlo Simulation	The assumptions used in the Monte Carlo simulation were as follows: Six Months Ended 2024 Dividend yield 0 % Risk-free rate 4.50 % Expected volatility (TreeHouse Foods, Inc.) 34.34 % Expected volatility (Peer Group) 33.56 % Expected term (in years) 2.79
Schedule of Performance Unit Activity	The following table summarizes the performance unit activity during the six months ended June 30, 2024: Performance Weighted (In thousands) Nonvested, at December 31, 2023 534 $ 47.44 Granted 143 36.95 Vested (45) 43.45 Forfeited (244) 56.81 Nonvested, at June 30, 2024 388 38.09
Schedule of Highlight of Performance Unit Activity	Three Months Ended Six Months Ended 2024 2023 2024 2023 (In millions) (In millions) Fair value of vested performance units $ 0.1 $ 1.3 $ 1.8 $ 5.0 Tax benefit recognized from performance units vested — — 0.1 0.4

ACCUMULATED OTHER COMPREHENSI_2

ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables)	6 Months Ended
	Jun. 30, 2024
Equity [Abstract]
Schedule of Components of Accumulated Other Comprehensive Loss Net of Tax	Accumulated other comprehensive loss consists of the following components, all of which are net of tax: Foreign Unrecognized Accumulated (In millions) Balance at December 31, 2022 $ (87.0) $ 3.3 $ (83.7) Other comprehensive income before reclassifications 2.2 — 2.2 Reclassifications from accumulated other comprehensive loss (2) — 0.1 0.1 Other comprehensive income 2.2 0.1 2.3 Balance at June 30, 2023 $ (84.8) $ 3.4 $ (81.4) Balance at December 31, 2023 $ (84.2) $ 8.1 $ (76.1) Other comprehensive loss (3.9) — (3.9) Balance at June 30, 2024 $ (88.1) $ 8.1 $ (80.0) (1) The tax impact of the foreign currency translation adjustment and the unrecognized pension and postretirement benefits reclassification was insignificant for the three and six months ended June 30, 2024 and 2023. (2) Refer to Note 15 for additional information regarding these reclassifications.

EMPLOYEE RETIREMENT AND POSTR_2

EMPLOYEE RETIREMENT AND POSTRETIREMENT BENEFITS (Tables)	6 Months Ended
	Jun. 30, 2024
Retirement Benefits [Abstract]
Schedule of Net Periodic Pension Cost and Postretirement Cost	Components of net periodic pension cost (benefit) are as follows: Three Months Ended Six Months Ended 2024 2023 2024 2023 (In millions) (In millions) Service cost $ 0.1 $ 0.1 $ 0.2 $ 0.2 Interest cost 2.6 3.1 5.2 6.3 Expected return on plan assets (2.7) (3.5) (5.4) (6.9) Amortization of unrecognized prior service cost — 0.1 — 0.1 Amortization of unrecognized net loss 0.1 0.1 0.2 0.2 Net periodic pension cost (benefit) $ 0.1 $ (0.1) $ 0.2 $ (0.1) Components of net periodic postretirement cost are as follows: Three Months Ended Six Months Ended 2024 2023 2024 2023 (In millions) (In millions) Interest cost $ 0.2 $ 0.2 $ 0.4 $ 0.4 Amortization of unrecognized net gain (0.1) (0.1) (0.2) (0.2) Net periodic postretirement cost $ 0.1 $ 0.1 $ 0.2 $ 0.2

OTHER OPERATING EXPENSE (INCO_2

OTHER OPERATING EXPENSE (INCOME), NET (Tables)	6 Months Ended
	Jun. 30, 2024
Other Income and Expenses [Abstract]
Schedule of Other Operating Expense, Net	The Company incurred other operating expense (income), net, for the three and six months ended June 30, 2024 and 2023, which consisted of the following: Three Months Ended Six Months Ended 2024 2023 2024 2023 (In millions) (In millions) Growth, reinvestment, and restructuring programs (1) $ 11.5 $ 8.9 $ 18.2 $ 24.2 TSA income (2) (0.1) (11.9) (0.6) (25.3) Other (0.2) 0.2 — 0.9 Other operating expense (income), net $ 11.2 $ (2.8) $ 17.6 $ (0.2) (1) Refer to Note 3 for more information. (2) Refer to Note 6 for more information.

DERIVATIVE INSTRUMENTS (Tables)

DERIVATIVE INSTRUMENTS (Tables)	6 Months Ended
	Jun. 30, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Fair Value of Derivative Instrument	The following table identifies the fair value of each derivative instrument: Balance Sheet Location June 30, 2024 December 31, 2023 (In millions) Asset derivatives Commodity contracts Prepaid expenses and other current assets $ 3.8 $ 1.9 Interest rate swap agreements Prepaid expenses and other current assets 13.6 — Interest rate swap agreements Other assets, net 4.5 17.9 $ 21.9 $ 19.8 Liability derivatives Commodity contracts Accrued expenses $ 0.8 $ 0.8 Interest rate swap agreements Accrued expenses 0.8 7.2 $ 1.6 $ 8.0
Schedule of Gains and Losses on Derivative Contracts	We recognized the following gains and losses on our derivative contracts in the Condensed Consolidated Statements of Operations: Location of Gain (Loss) Three Months Ended Six Months Ended Recognized in Net (Loss) Income 2024 2023 2024 2023 (In millions) (In millions) Mark-to-market unrealized gain (loss) Commodity contracts Other (income) expense, net $ 2.3 $ 0.4 $ 1.9 $ 0.7 Interest rate swap agreements Other (income) expense, net (0.8) 9.0 6.6 2.8 Total unrealized gain $ 1.5 $ 9.4 $ 8.5 $ 3.5 Realized gain (loss) Commodity contracts Manufacturing-related to Cost of sales and transportation-related to Selling and distribution $ 2.3 $ — $ 3.8 $ — Interest rate swap agreements Interest expense 5.6 4.6 11.2 8.2 Total realized gain $ 7.9 $ 4.6 $ 15.0 $ 8.2 Total gain $ 9.4 $ 14.0 $ 23.5 $ 11.7

DISAGGREGATION OF REVENUE (Tabl

DISAGGREGATION OF REVENUE (Tables)	6 Months Ended
	Jun. 30, 2024
Segment Reporting [Abstract]
Schedule of Segment Revenue Disaggregated by Product Category and Sales Channel	Revenue disaggregated by product category groups is as follows: Three Months Ended Six Months Ended 2024 2023 2024 2023 (In millions) (In millions) Snacking $ 308.9 $ 321.6 $ 623.7 $ 639.4 Beverages & drink mixes 244.5 243.9 512.2 535.2 Grocery 235.1 238.0 473.3 482.9 Total net sales $ 788.5 $ 803.5 $ 1,609.2 $ 1,657.5 Revenue disaggregated by sales channel is as follows: Three Months Ended Six Months Ended 2024 2023 2024 2023 (In millions) (In millions) Retail grocery $ 607.5 $ 627.2 $ 1,257.4 $ 1,306.4 Co-manufacturing 104.2 107.8 204.2 217.2 Food-away-from-home and other 76.8 68.5 147.6 133.9 Total net sales $ 788.5 $ 803.5 $ 1,609.2 $ 1,657.5

BASIS OF PRESENTATION - Additio

BASIS OF PRESENTATION - Additional Information (Details)	6 Months Ended
	Jun. 30, 2024 segment_manager segment
Accounting Policies [Abstract]
Number of operating segments | segment	1
Number of segment managers | segment_manager	1

GROWTH, REINVESTMENT, AND RES_3

GROWTH, REINVESTMENT, AND RESTRUCTURING PROGRAMS - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 11.5	$ 8.9	$ 18.2	$ 24.2
Strategic Growth Initiatives
Restructuring Cost and Reserve [Line Items]
Restructuring costs incurred	115.5		115.5
Restructuring charges		$ 3.4		$ 10.4
Facility Closures
Restructuring Cost and Reserve [Line Items]
Restructuring costs incurred	9.4		9.4
Restructuring charges	2.5		4.4
Expected cost	$ 15		$ 15

GROWTH, REINVESTMENT, AND RES_4

GROWTH, REINVESTMENT, AND RESTRUCTURING PROGRAMS - Aggregate Expenses Incurred Associated with Facility Closure (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 11.5	$ 8.9	$ 18.2	$ 24.2
Employee-related
Restructuring Cost and Reserve [Line Items]
Restructuring charges	4.7	3.4	7.3	7.7
Other costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 6.8	$ 5.5	$ 10.9	$ 16.5

GROWTH, REINVESTMENT, AND RES_5

GROWTH, REINVESTMENT, AND RESTRUCTURING PROGRAMS - Reconciliation of Liabilities (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Restructuring Reserve [Roll Forward]
Expenses recognized	$ 11.5	$ 8.9	$ 18.2	$ 24.2
Severance
Restructuring Reserve [Roll Forward]
Beginning Balance			5.4
Expenses recognized			4.3
Cash payments			(4.5)
Ending Balance	$ 5.2		$ 5.2

RECEIVABLES SALES PROGRAM - Add

RECEIVABLES SALES PROGRAM - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Receivables Sales Agreement [Line Items]
Termination period			60 days
Loss on sale of receivables	$ 1,900,000	$ 3,300,000	$ 3,900,000	$ 6,600,000
Maximum
Receivables Sales Agreement [Line Items]
Receivables held for sale	$ 500,000,000		$ 500,000,000

RECEIVABLES SALES PROGRAM - Acc

RECEIVABLES SALES PROGRAM - Accounts Receivable Sold the Receivable Sales Program (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Receivables [Abstract]
Outstanding accounts receivable sold	$ 230.6		$ 343.8
Receivables collected and not remitted to financial institutions	142.6		$ 200.2
Receivables sold	495.5	$ 923
Receivables collected and remitted to financial institutions	$ (608.7)	$ (964.7)

INVENTORIES (Details)

INVENTORIES (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Inventory Disclosure [Abstract]
Raw materials and supplies	$ 242.7	$ 245.4
Finished goods	349.7	288.6
Total inventories	$ 592.4	$ 534

ACQUISITIONS AND DIVESTITURES -

ACQUISITIONS AND DIVESTITURES - Acquisition Additional Information (Details) - USD ($) $ in Millions				6 Months Ended
	Jan. 02, 2024	Jun. 30, 2023	Apr. 01, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Business Acquisition [Line Items]
Goodwill				$ 1,822.3		$ 1,824.7
Deferred payment				0	$ 4
Revolving Credit Facility
Business Acquisition [Line Items]
Revolving credit facility				$ 500
Pickle Branded Assets
Business Acquisition [Line Items]
Purchase price	$ 25.9
Cash transferred at close	20
Purchase price adjustment	$ 5.9
Pickle Branded Assets | Trademarks
Business Acquisition [Line Items]
Estimated useful life of trademarks	10 years
Coffee Roasting Capability
Business Acquisition [Line Items]
Purchase price		$ 90.6
Cash transferred at close		92.2
Purchase price adjustment		$ (1.6)
Pretzel Business Acquisition
Business Acquisition [Line Items]
Purchase price			$ 14
Cash transferred at close			10
Goodwill			5.4
Deferred payment			$ 4

ACQUISITIONS AND DIVESTITURES_2

ACQUISITIONS AND DIVESTITURES - Preliminary Purchase Price Allocation of Fair Value of Net Tangible Assets Acquired (Details) - USD ($) $ in Millions	Jan. 02, 2024	Jun. 30, 2023
Pickle Branded Assets
Business Acquisition [Line Items]
Cash transferred at close	$ 20
Purchase price adjustment	5.9
Total consideration transferred	25.9
Allocation of consideration to assets acquired:
Inventories	25.2
Total purchase price	25.9
Pickle Branded Assets | Trademarks
Allocation of consideration to assets acquired:
Trademarks	$ 0.7
Coffee Roasting Capability
Business Acquisition [Line Items]
Cash transferred at close		$ 92.2
Purchase price adjustment		(1.6)
Total consideration transferred		90.6
Allocation of consideration to assets acquired:
Inventories		29.8
Property, plant, and equipment, net		60.8
Total purchase price		$ 90.6

ACQUISITIONS AND DIVESTITURES_3

ACQUISITIONS AND DIVESTITURES - Divestures Additional Information (Details)		3 Months Ended			6 Months Ended
	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($)	Mar. 31, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Sep. 29, 2023 USD ($)	Oct. 03, 2022 USD ($) entity
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
TSA, income received		$ 100,000		$ 11,900,000	$ 600,000	$ 25,300,000
Disposed of by sale | Snack Bars Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash consideration							$ 58,700,000
TSA, income received			$ 100,000
Disposed of by sale | Meal Preparation
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash consideration	$ 943,500,000			943,500,000		943,500,000		$ 963,800,000
TSA, income received		$ 100,000		11,900,000	500,000	25,300,000
Number of purchasing entities | entity								2
Reduction in purchase price consideration	20,300,000			20,300,000		20,300,000
Proceeds from divestitures	522,600,000
Note receivable	$ 420,900,000			420,900,000		420,900,000
Note receivable, term	5 years
Interest income				10,700,000	$ 0	21,400,000
Gain (loss) on sale of business				$ (1,000,000)		$ 3,500,000

ACQUISITIONS AND DIVESTITURES_4

ACQUISITIONS AND DIVESTITURES - Results of Discontinued Operations on Income Statement (Details) - Disposed of by sale - Snack Bars Business and Meal Preparation - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales	$ 40.1		$ 80.9
Cost of sales	40.5		82.6
Selling, general, administrative and other operating expenses	0.4		0.7
(Gain) loss on sale of business	(1)		3.5
Operating income (loss) from discontinued operations	0.2		(5.9)
Interest and other income	0		(1.1)
Income tax benefit	(0.7)		(0.5)
Net income (loss) from discontinued operations	$ 0.9		$ (4.3)

PROPERTY, PLANT, AND EQUIPMEN_2

PROPERTY, PLANT, AND EQUIPMENT - Components (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 1,568.9	$ 1,542.3
Less accumulated depreciation	(850.2)	(804.7)
Property, plant, and equipment, net	718.7	737.6
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	35.2	35.2
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	378.6	367.2
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,051.4	1,042.5
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 103.7	$ 97.4

PROPERTY, PLANT, AND EQUIPMEN_3

PROPERTY, PLANT, AND EQUIPMENT - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Property, Plant and Equipment [Abstract]
Depreciation expense	$ 24.1	$ 22.5	$ 48.6	$ 45.6
Impairment of property, plant and equipment	$ 19.3	$ 0	$ 19.3	$ 0

GOODWILL AND INTANGIBLE ASSET_2

GOODWILL AND INTANGIBLE ASSETS - Changes in Carrying Amount of Goodwill (Details)	6 Months Ended
	Jun. 30, 2024 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Accumulated impairment losses	$ 0
Goodwill [Roll Forward]
Beginning Balance	1,824,700,000
Foreign currency exchange adjustments	(2,400,000)
Ending Balance	$ 1,822,300,000

GOODWILL AND INTANGIBLE ASSET_3

GOODWILL AND INTANGIBLE ASSETS - Gross Carrying Amounts and Accumulated Amortization of Intangible Assets, with Finite Lives (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 793.6	$ 792.5
Accumulated Amortization	(564.3)	(541.1)
Net Carrying Amount	229.3	251.4
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Gross Carrying Amount	799.6	798.5
Accumulated Amortization	(564.3)	(541.1)
Intangible assets, net	235.3	257.4
Trademarks
Indefinite-lived Intangible Assets [Line Items]
Intangible assets with indefinite lives:	6	6
Customer-related
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	547.9	549.3
Accumulated Amortization	(380.1)	(364.1)
Net Carrying Amount	167.8	185.2
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Accumulated Amortization	(380.1)	(364.1)
Trademarks
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	19.3	18.7
Accumulated Amortization	(16.5)	(15.9)
Net Carrying Amount	2.8	2.8
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Accumulated Amortization	(16.5)	(15.9)
Formulas/recipes
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	15.5	15.5
Accumulated Amortization	(15)	(14.9)
Net Carrying Amount	0.5	0.6
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Accumulated Amortization	(15)	(14.9)
Computer software
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	210.9	209
Accumulated Amortization	(152.7)	(146.2)
Net Carrying Amount	58.2	62.8
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Accumulated Amortization	$ (152.7)	$ (146.2)

INCOME TAXES (Details)

INCOME TAXES (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Income Tax Disclosure [Abstract]
Effective income tax rate	20.10%	28.70%	21.50%	27.60%
Decrease in unrecognized tax benefits is reasonably possible	$ 1		$ 1

LONG-TERM DEBT (Details)

LONG-TERM DEBT (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Finance leases	$ 1.8	$ 0.6
Total outstanding debt	1,406.8	1,405.6
Deferred financing costs	(8)	(9.2)
Less current portion	(0.6)	(0.4)
Total long-term debt	1,398.2	1,396
2028 Notes
Debt Instrument [Line Items]
2028 Notes	500	500
Term Loan A
Debt Instrument [Line Items]
Term loan	316.4	316.4
Term Loan A-1
Debt Instrument [Line Items]
Term loan	$ 588.6	$ 588.6

LONG-TERM DEBT - Additional Inf

LONG-TERM DEBT - Additional Information (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Long-term debt, fair value	$ 1,354.4	$ 1,350.5
Long-term debt, carrying value	1,405	$ 1,405
Revolving Credit Facility
Debt Instrument [Line Items]
Revolving credit facility available	471
Revolving credit facility, maximum borrowing capacity	500
Letters of credit facility issued but undrawn	$ 29

STOCKHOLDERS' EQUITY - Addition

STOCKHOLDERS' EQUITY - Additional Information (Details) - Common Stock - USD ($)	Jun. 30, 2024	Nov. 02, 2017
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, expected annual cap		$ 150,000,000
Remaining authorized repurchase amount	$ 78,000,000
Maximum
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, authorized amount		$ 400,000,000

STOCKHOLDERS' EQUITY - Repurcha

STOCKHOLDERS' EQUITY - Repurchases of Common Stock (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Equity [Abstract]
Shares repurchased (in shares)	1.3	0	2.5	0
Weighted average price per share (in usd per share)	$ 35.81	$ 0	$ 36.20	$ 0
Total cost	$ 44.8	$ 0	$ 88.7	$ 0
Excise tax	$ 0.4	$ 0	$ 0.8	$ 0

EARNINGS PER SHARE (Details)

EARNINGS PER SHARE (Details) - shares shares in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Earnings Per Share [Abstract]
Weighted average common shares outstanding (in shares)	52.3	56.4	53	56.3
Assumed exercise/vesting of equity awards (in shares)	0	0.4	0	0.5
Weighted average diluted common shares outstanding (in shares)	52.3	56.8	53	56.8
Equity awards, excluded from computation of diluted earnings (in shares)	0.8	1.2	0.6	1.2

STOCK-BASED COMPENSATION - Addi

STOCK-BASED COMPENSATION - Additional Information (Details) $ / shares in Units, $ in Millions	3 Months Ended			6 Months Ended	12 Months Ended	36 Months Ended	42 Months Ended
	Jun. 30, 2024 USD ($) shares	Mar. 31, 2023	Jun. 30, 2022 $ / shares shares	Jun. 30, 2024 USD ($) installment $ / shares shares	Dec. 31, 2022	Dec. 31, 2023	Jun. 30, 2024 USD ($) shares
Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period					3 years
Award expiration period				10 years
Compensation costs, unrecognized | $	$ 1.3			$ 1.3			$ 1.3
Compensation costs, recognition weighted average remaining period (in years)				10 months 24 days
Stock Option | Vesting in year 1
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage		33%
Stock Option | Vesting in year 2
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage		67%
Employee Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period				3 years
Compensation costs, unrecognized | $	25.9			$ 25.9			25.9
Compensation costs, recognition weighted average remaining period (in years)				2 years 1 month 6 days
Share based compensation arrangement, award vesting period, number of installments | installment				3
Granted (in usd per share) | $ / shares				$ 37.08
Granted (in shares)				500,000
Performance Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation costs, unrecognized | $	$ 7.8			$ 7.8			$ 7.8
Compensation costs, recognition weighted average remaining period (in years)				1 year 8 months 12 days
Performance based compensation period				3 years
Granted (in usd per share) | $ / shares				$ 36.95
Granted (in shares)				143,000
Performance Units | Executive Members
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance based compensation period						3 years	3 years
Accrual of units						25%
Grant-date fair value (in usd per share) | $ / shares				$ 37.56
Units granted (in shares)				35,800
Performance Units | Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance based compensation period	2 years		2 years
Predefined percentage for calculation of performance achievement unit awards	0%
Granted (in usd per share) | $ / shares			$ 58.36
Granted (in shares)			239,300
Performance Units | Minimum | Executive Members
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Predefined percentage for calculation of performance unit awards				0%		0%
Predefined percentage for calculation of performance achievement unit awards				0%		0%
Performance Units | Minimum | Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Predefined percentage for calculation of performance achievement unit awards			0%
Performance Units | Maximum | Executive Members
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Predefined percentage for calculation of performance unit awards				200%		200%
Predefined percentage for calculation of performance achievement unit awards				200%		150%
Performance Units | Maximum | Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Predefined percentage for calculation of performance achievement unit awards			450%
TreeHouse Foods, Inc. Equity and Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares available to be awarded (in shares)	22,500,000			22,500,000			22,500,000

STOCK-BASED COMPENSATION - Sche

STOCK-BASED COMPENSATION - Schedule of Total Compensation Expense (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Share-Based Payment Arrangement [Abstract]
Compensation expense related to stock-based payments	$ 5.3	$ 5.9	$ 11	$ 13.1
Related income tax benefit	$ 1.2	$ 0.8	$ 2.6	$ 1.7

STOCK-BASED COMPENSATION - Sc_2

STOCK-BASED COMPENSATION - Schedule of Stock Option Activity (Details) - Stock Option - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Employee Options
Beginning balance (in shares)	578
Expired (in shares)	(54)
Ending balance (in shares)	524	578
Vested/expected to vest (in shares)	510
Exercisable (in shares)	331
Weighted Average Exercise Price
Beginning balance (in usd per share)	$ 64.20
Expired (in usd per share)	80.55
Ending balance (in usd per share)	62.54	$ 64.20
Vested/expected to vest (in usd per share)	63.10
Exercisable (in usd per share)	$ 74.10
Weighted Average Remaining Contractual Term (yrs.)
Outstanding	5 years	5 years 1 month 6 days
Vested/expected to vest	5 years
Exercisable	3 years 4 months 24 days
Aggregate Intrinsic Value
Beginning balance	$ 0
Ending balance	0	$ 0
Vested/expected to vest	0
Exercisable	$ 0

STOCK-BASED COMPENSATION - Sc_3

STOCK-BASED COMPENSATION - Schedule of Restricted Stock and Restricted Stock Unit Activity (Details) shares in Thousands	6 Months Ended
	Jun. 30, 2024 $ / shares shares
Employee Restricted Stock Units
Employee Restricted Stock Units
Beginning balance (in shares) | shares	573
Granted (in shares) | shares	500
Vested (in shares) | shares	(242)
Forfeited (in shares) | shares	(87)
Ending balance (in shares) | shares	744
Weighted Average Grant Date Fair Value
Outstanding, beginning balance (in usd per share) | $ / shares	$ 41.57
Granted (in usd per share) | $ / shares	37.08
Vested (in usd per share) | $ / shares	41.20
Forfeited (in usd per share) | $ / shares	39.69
Outstanding, ending balance (in usd per share) | $ / shares	$ 38.90
Director Restricted Stock Units
Employee Restricted Stock Units
Beginning balance (in shares) | shares	45
Granted (in shares) | shares	35
Vested (in shares) | shares	(18)
Forfeited (in shares) | shares	0
Ending balance (in shares) | shares	62
Earned and deferred (in shares) | shares	28
Weighted Average Grant Date Fair Value
Outstanding, beginning balance (in usd per share) | $ / shares	$ 50.14
Granted (in usd per share) | $ / shares	36.10
Vested (in usd per share) | $ / shares	51.87
Forfeited (in usd per share) | $ / shares	0
Outstanding, ending balance (in usd per share) | $ / shares	41.73
Earned and deferred (in usd per share) | $ / shares	$ 48.62

STOCK-BASED COMPENSATION - Sc_4

STOCK-BASED COMPENSATION - Schedule of Employee and Director Restricted Stock and Restricted Stock Highlights (Details) - Employee Restricted Stock Units - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of vested restricted stock units	$ 1	$ 3.2	$ 9.8	$ 14.3
Tax benefit recognized from vested restricted stock units	$ 0.2	$ 0.7	$ 1.6	$ 2.3

STOCK-BASED COMPENSATION - Shar

STOCK-BASED COMPENSATION - Shareholder Return Market Condition and Assumptions (Details) - Performance Units	6 Months Ended
	Jun. 30, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield	0%
Risk-free rate	4.50%
Expected term (in years)	2 years 9 months 14 days
Expected volatility (TreeHouse Foods, Inc.)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	34.34%
Expected volatility (Peer Group)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	33.56%

STOCK-BASED COMPENSATION - Sc_5

STOCK-BASED COMPENSATION - Schedule of Performance Unit Activity (Details) - Performance Units shares in Thousands	6 Months Ended
	Jun. 30, 2024 $ / shares shares
Performance Units
Beginning balance (in shares) | shares	534
Granted (in shares) | shares	143
Vested (in shares) | shares	(45)
Forfeited (in shares) | shares	(244)
Ending balance (in shares) | shares	388
Weighted Average Grant Date Fair Value
Outstanding, beginning balance (in usd per share) | $ / shares	$ 47.44
Granted (in usd per share) | $ / shares	36.95
Vested (in usd per share) | $ / shares	43.45
Forfeited (in usd per share) | $ / shares	56.81
Outstanding, ending balance (in usd per share) | $ / shares	$ 38.09

STOCK-BASED COMPENSATION - Sc_6

STOCK-BASED COMPENSATION - Schedule of Performance Unit Highlights (Details) - Performance Units - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of vested performance units	$ 0.1	$ 1.3	$ 1.8	$ 5
Tax benefit recognized from performance units vested	$ 0	$ 0	$ 0.1	$ 0.4

ACCUMULATED OTHER COMPREHENSI_3

ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 1,608.1	$ 1,664.8	$ 1,704.4	$ 1,687	$ 1,664.8	$ 1,687
Other comprehensive income before reclassifications						2.2
Reclassifications from accumulated other comprehensive loss						0.1
Other comprehensive (loss) income	(1.3)	(2.6)	2	0.3	(3.9)	2.3
Ending balance	1,550.1	1,608.1	1,734.9	1,704.4	1,550.1	1,734.9
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(78.7)	(76.1)	(83.4)	(83.7)	(76.1)	(83.7)
Other comprehensive (loss) income	(1.3)	(2.6)	2	0.3
Ending balance	(80)	(78.7)	(81.4)	(83.4)	(80)	(81.4)
Foreign Currency Translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance		(84.2)		(87)	(84.2)	(87)
Other comprehensive income before reclassifications						2.2
Reclassifications from accumulated other comprehensive loss						0
Other comprehensive (loss) income					(3.9)	2.2
Ending balance	(88.1)		(84.8)		(88.1)	(84.8)
Unrecognized Pension and Postretirement Benefits
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance		$ 8.1		$ 3.3	8.1	3.3
Other comprehensive income before reclassifications						0
Reclassifications from accumulated other comprehensive loss						0.1
Other comprehensive (loss) income					0	0.1
Ending balance	$ 8.1		$ 3.4		$ 8.1	$ 3.4

EMPLOYEE RETIREMENT AND POSTR_3

EMPLOYEE RETIREMENT AND POSTRETIREMENT BENEFITS (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Pension Benefits
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	$ 0.1	$ 0.1	$ 0.2	$ 0.2
Interest cost	2.6	3.1	5.2	6.3
Expected return on plan assets	(2.7)	(3.5)	(5.4)	(6.9)
Amortization of unrecognized prior service cost	0	0.1	0	0.1
Amortization of unrecognized net loss	0.1	0.1	0.2	0.2
Net periodic pension cost (benefit)	0.1	(0.1)	0.2	(0.1)
Postretirement Benefits
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Interest cost	0.2	0.2	0.4	0.4
Amortization of unrecognized net loss	(0.1)	(0.1)	(0.2)	(0.2)
Net periodic pension cost (benefit)	$ 0.1	$ 0.1	$ 0.2	$ 0.2

OTHER OPERATING EXPENSE (INCO_3

OTHER OPERATING EXPENSE (INCOME), NET (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Other Income and Expenses [Abstract]
Growth, reinvestment, and restructuring programs	$ 11.5	$ 8.9	$ 18.2	$ 24.2
TSA, income	(0.1)	(11.9)	(0.6)	(25.3)
Other	(0.2)	0.2	0	0.9
Other operating expense (income), net	$ 11.2	$ (2.8)	$ 17.6	$ (0.2)

DERIVATIVE INSTRUMENTS - Additi

DERIVATIVE INSTRUMENTS - Additional Information (Details) - USD ($)	Jul. 31, 2024	Jun. 30, 2024	Dec. 31, 2023
Interest Rate Swap Agreements
Derivative [Line Items]
Derivative notional amount		$ 1,475,000,000	$ 1,175,000,000
Interest Rate Swap Agreements | Subsequent Event
Derivative [Line Items]
Derivative notional amount	$ 275,000,000
Weighted average fixed interest rate	3.70%
Interest Rate Swaps Due February 28, 2025
Derivative [Line Items]
Derivative notional amount		$ 875,000,000
Weighted average fixed interest rate		2.91%
Interest Rate Swaps Effective February 28, 2025 Through February 29, 2028
Derivative [Line Items]
Derivative notional amount		$ 600,000,000
Weighted average fixed interest rate		3.68%
Diesel Contract
Derivative [Line Items]
Derivative, nonmonetary notional amount		98,400,000	24,400,000

DERIVATIVE INSTRUMENTS - Fair V

DERIVATIVE INSTRUMENTS - Fair Value of Derivative Instrument (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Derivatives, Fair Value [Line Items]
Asset derivatives	$ 21.9	$ 19.8
Liability derivatives	1.6	8
Commodity contracts | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Asset derivatives	3.8	1.9
Commodity contracts | Accrued expenses
Derivatives, Fair Value [Line Items]
Liability derivatives	0.8	0.8
Interest rate swap agreements | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Asset derivatives	13.6	0
Interest rate swap agreements | Other assets, net
Derivatives, Fair Value [Line Items]
Asset derivatives	4.5	17.9
Interest rate swap agreements | Accrued expenses
Derivatives, Fair Value [Line Items]
Liability derivatives	$ 0.8	$ 7.2

DERIVATIVE INSTRUMENTS - Gains

DERIVATIVE INSTRUMENTS - Gains and Losses on Derivative Contracts (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Derivative Instruments, Gain (Loss) [Line Items]
Mark-to-market unrealized gain (loss), derivative			$ 8.5	$ 3.5
Total unrealized gain	$ 1.5	$ 9.4	8.5	3.5
Total realized gain	7.9	4.6	15	8.2
Total gain	9.4	14	23.5	11.7
Commodity contracts | Other (income) expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Mark-to-market unrealized gain (loss), commodity contracts	2.3	0.4	1.9	0.7
Commodity contracts | Manufacturing-related to Cost of sales and transportation-related to Selling and distribution
Derivative Instruments, Gain (Loss) [Line Items]
Total realized gain	2.3	0	3.8	0
Interest rate swap agreements | Other (income) expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Mark-to-market unrealized gain (loss), derivative	(0.8)	9	6.6	2.8
Interest rate swap agreements | Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Total realized gain	$ 5.6	$ 4.6	$ 11.2	$ 8.2

DISAGGREGATION OF REVENUE (Deta

DISAGGREGATION OF REVENUE (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Segment Reporting Information [Line Items]
Net sales	$ 788.5	$ 803.5	$ 1,609.2	$ 1,657.5
Retail grocery
Segment Reporting Information [Line Items]
Net sales	607.5	627.2	1,257.4	1,306.4
Co-manufacturing
Segment Reporting Information [Line Items]
Net sales	104.2	107.8	204.2	217.2
Food-away-from-home and other
Segment Reporting Information [Line Items]
Net sales	76.8	68.5	147.6	133.9
Snacking
Segment Reporting Information [Line Items]
Net sales	308.9	321.6	623.7	639.4
Beverages & drink mixes
Segment Reporting Information [Line Items]
Net sales	244.5	243.9	512.2	535.2
Grocery
Segment Reporting Information [Line Items]
Net sales	$ 235.1	$ 238	$ 473.3	$ 482.9