10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

 FORM 10-Q

 (Mark One)

☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the quarterly period ended: March 31, 2022

or

☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the transition period from                      to                     

Commission File Number 1-01520

  Aerojet Rocketdyne Holdings, Inc.

(Exact name of registrant as specified in its charter)

Delaware	34-0244000
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
222 N. Pacific Coast Highway
Suite 500
El Segundo
California	90245
(Address of principal executive offices)	(Zip Code)

310-252-8100

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common stock, $0.10 par value	AJRD	New York Stock Exchange

 Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  ☒   No  ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).   Yes  ☒  No  ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.  

Large accelerated filer	☒	Accelerated filer	☐
Non-accelerated filer	☐	Smaller reporting company	☐
Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).     Yes  ☐    No  ☒ 

As of April 18, 2022, the Company had 80,468,304 outstanding common shares, including unvested common shares, $0.10 par value.

Aerojet Rocketdyne Holdings, Inc.

Quarterly Report on Form 10-Q

For the Quarterly Period Ended March 31, 2022

Table of Contents 

Item Number		Page
PART I — FINANCIAL INFORMATION
1	Financial Statements	1
2	Management’s Discussion and Analysis of Financial Condition and Results of Operations	22
3	Quantitative and Qualitative Disclosures About Market Risk	33
4	Controls and Procedures	34
PART II — OTHER INFORMATION
1	Legal Proceedings	34
1A	Risk Factors	34
2	Unregistered Sales of Equity Securities and Use of Proceeds	34
3	Defaults Upon Senior Securities	34
4	Mine Safety Disclosures	34
5	Other Information	34
6	Exhibits	35
SIGNATURES
	Signatures	35

Part I — FINANCIAL INFORMATION

Item 1. Financial Statements

Aerojet Rocketdyne Holdings, Inc.

Condensed Consolidated Statements of Operations

(Unaudited) 

	Three months ended March 31,
	2022		2021
	(In millions, except per share amounts)
Net sales	$	511.1	$	496.1
Operating costs and expenses:
Cost of sales (exclusive of items shown separately below)	425.5		418.0
Selling, general and administrative expense	8.2		9.0
Depreciation and amortization	14.4		15.2
Other expense, net
Legal matters	16.1		—
Other	4.2		8.1
Total operating costs and expenses	468.4		450.3
Operating income	42.7		45.8
Non-operating:
Retirement benefits expense	0.3		8.5
Loss on debt	—		9.1
Interest income and other	0.2		(0.6)
Interest expense	3.9		5.1
Total non-operating expense, net	4.4		22.1
Income before income taxes	38.3		23.7
Income tax provision	10.5		5.6
Net income	$	27.8	$	18.1
Earnings per share of common stock
Basic earnings per share	$	0.34	$	0.23
Diluted
Diluted earnings per share	$	0.33	$	0.22
Weighted average shares of common stock outstanding, basic	80.2		77.6
Weighted average shares of common stock outstanding, diluted	85.8		80.7
Cash dividends paid per share	$	—	$	5.00

See Notes to Unaudited Condensed Consolidated Financial Statements.

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Aerojet Rocketdyne Holdings, Inc.

Condensed Consolidated Statements of Comprehensive Income

(Unaudited)

	Three months ended March 31,
	2022		2021
	(In millions)
Net income	$	27.8	$	18.1
Other comprehensive income:
Amortization of net actuarial losses and prior service costs, net of income taxes of $1.8 million and $3.8 million	5.2		11.5
Comprehensive income	$	33.0	$	29.6

See Notes to Unaudited Condensed Consolidated Financial Statements.

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Aerojet Rocketdyne Holdings, Inc.

Condensed Consolidated Balance Sheets

(Unaudited)

	March 31, 2022		December 31, 2021
	(In millions, except per share amounts)
ASSETS
Current Assets
Cash and cash equivalents	$	610.9	$	700.4
Restricted cash	3.0		3.0
Marketable securities	10.1		10.6
Accounts receivable	143.4		60.6
Contract assets	372.0		354.2
Other current assets	93.6		99.5
Total Current Assets	1,233.0		1,228.3
Noncurrent Assets
Right-of-use assets	49.8		52.6
Property, plant and equipment, net	413.3		421.1
Recoverable environmental remediation costs	220.7		226.2
Deferred income taxes	101.5		55.6
Goodwill	161.4		161.4
Intangible assets	33.1		34.9
Other noncurrent assets	236.3		243.3
Total Noncurrent Assets	1,216.1		1,195.1
Total Assets	$	2,449.1	$	2,423.4
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current Liabilities
Current portion of long-term debt	$	177.3	$	166.7
Accounts payable	115.1		132.2
Reserves for environmental remediation costs	41.2		37.7
Contract liabilities	366.7		366.5
Other current liabilities	213.1		172.7
Total Current Liabilities	913.4		875.8
Noncurrent Liabilities
Long-term debt	285.7		294.6
Reserves for environmental remediation costs	252.5		258.7
Pension benefits	242.9		255.9
Operating lease liabilities	38.8		41.3
Other noncurrent liabilities	165.9		173.8
Total Noncurrent Liabilities	985.8		1,024.3
Total Liabilities	1,899.2		1,900.1
Commitments and contingencies (Note 8)
Stockholders’ Equity
Preferred stock, par value of $1.00; 15.0 million shares authorized; none issued or outstanding	—		—
Common stock, par value of $0.10; 150.0 million shares authorized; 80.3 million shares outstanding as of March 31, 2022; 80.1 million shares outstanding as of December 31, 2021	8.0		8.0
Other capital	572.7		578.1
Treasury stock at cost, 2.1 million shares as of March 31, 2022 and December 31, 2021	(64.4)		(64.4)
Retained earnings	129.4		102.6
Accumulated other comprehensive loss, net of income taxes	(95.8)		(101.0)
Total Stockholders’ Equity	549.9		523.3
Total Liabilities and Stockholders’ Equity	$	2,449.1	$	2,423.4

See Notes to Unaudited Condensed Consolidated Financial Statements.

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Aerojet Rocketdyne Holdings, Inc.

Condensed Consolidated Statements of Stockholders’ Equity

(Unaudited) 

	Common Stock							(Accumulated Deficit)		Accumulated Other		Total
	Shares	Amount		Other Capital		Treasury Stock		Retained Earnings		Comprehensive Loss		Stockholders' Equity
	(In millions)
December 31, 2020	76.8	$	7.7	$	562.1	$	(64.4)	$	(57.4)	$	(227.6)	$	220.4
Net income	—	—		—		—		18.1		—		18.1
Amortization of net actuarial losses and prior service costs, net of income taxes	—	—		—		—		—		11.5		11.5
Adjustment to dividends paid	—	—		—		—		13.3		—		13.3
Settlement of debt	2.6	0.3		(4.1)		—		—		—		(3.8)
Repurchase of shares for withholding taxes and option costs under equity plans	—	—		(4.0)		—		—		—		(4.0)
Stock-based compensation and shares issued under equity plans	0.2	—		8.4		—		—		—		8.4
March 31, 2021	79.6	$	8.0	$	562.4	$	(64.4)	$	(26.0)	$	(216.1)	$	263.9
December 31, 2021	80.1	$	8.0	$	578.1	$	(64.4)	$	102.6	$	(101.0)	$	523.3
Net income	—	—		—		—		27.8		—		27.8
Amortization of net actuarial losses and prior service costs, net of income taxes	—	—		—		—		—		5.2		5.2
Cumulative effect of change in accounting guidance (see Note 1)	—			(5.6)		—		(1.0)		—		(6.6)
Repurchase of shares for withholding taxes and option costs under equity plans	(0.1)	—		(4.3)		—		—		—		(4.3)
Stock-based compensation and shares issued under equity plans	0.3	—		4.5		—		—		—		4.5
March 31, 2022	80.3	$	8.0	$	572.7	$	(64.4)	$	129.4	$	(95.8)	$	549.9

See Notes to Unaudited Condensed Consolidated Financial Statements.

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Aerojet Rocketdyne Holdings, Inc.

Condensed Consolidated Statements of Cash Flows

(Unaudited)

	Three months ended March 31,
	2022		2021
	(In millions)
Operating Activities
Net income	$	27.8	$	18.1
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	14.4		15.2
Amortization of debt discount and deferred financing costs	0.4		1.5
Stock-based compensation	(0.9)		2.8
Retirement benefits, net	(6.6)		(2.5)
Loss on debt	—		9.1
Other, net	0.5		(0.3)
Changes in assets and liabilities:
Accounts receivable	(82.8)		(130.7)
Contract assets	(17.8)		(11.9)
Other current assets	5.9		14.1
Recoverable environmental remediation costs	5.5		3.9
Other noncurrent assets	6.8		2.3
Accounts payable	(19.0)		(27.4)
Contract liabilities	0.2		29.9
Other current liabilities	45.3		14.6
Deferred income taxes	(45.8)		(3.0)
Reserves for environmental remediation costs	(2.7)		(5.3)
Other noncurrent liabilities and other	(6.2)		0.2
Net Cash Used in Operating Activities	(75.0)		(69.4)
Investing Activities
Purchases of marketable securities	—		(1.9)
Capital expenditures	(2.2)		(3.8)
Net Cash Used in Investing Activities	(2.2)		(5.7)
Financing Activities
Dividend payments	(1.2)		(428.5)
Debt repayments	(7.1)		(142.4)
Repurchase of shares for withholding taxes and option costs under equity plans	(4.3)		(4.0)
Proceeds from shares issued under equity plans	0.3		4.2
Net Cash Used in Financing Activities	(12.3)		(570.7)
Net Decrease in Cash, Cash Equivalents and Restricted Cash	(89.5)		(645.8)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	703.4		1,152.5
Cash, Cash Equivalents and Restricted Cash at End of Period	$	613.9	$	506.7
Supplemental disclosures of cash flow information
Cash paid for interest	$	2.6	$	2.7

See Notes to Unaudited Condensed Consolidated Financial Statements.

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Aerojet Rocketdyne Holdings, Inc.

Notes to Unaudited Condensed Consolidated Financial Statements

Note 1. Basis of Presentation and Nature of Operations

Aerojet Rocketdyne Holdings, Inc. ("Aerojet Rocketdyne Holdings" or the "Company") has prepared the accompanying unaudited condensed consolidated financial statements, including the accounts of the Company and its 100% owned and majority owned subsidiaries, in accordance with the instructions to Form 10-Q. The December 31, 2021, condensed consolidated balance sheet was derived from audited financial statements, but does not include all of the disclosures required by accounting principles generally accepted in the United States of America ("GAAP"). These interim financial statements should be read in conjunction with the financial statements and accompanying notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2021. Certain reclassifications have been made to financial information for prior years to conform to the current year’s presentation.

The Company believes the accompanying unaudited condensed consolidated financial statements reflect all adjustments, including normal recurring accruals, necessary for a fair statement of its financial position, results of operations, and cash flows for the periods presented. All significant intercompany balances and transactions have been eliminated in consolidation. The preparation of the unaudited condensed consolidated financial statements in conformity with GAAP requires the Company to make estimates and assumptions that affect the amounts reported in the unaudited condensed consolidated financial statements and accompanying notes. Actual results could differ from those estimates. In addition, the operating results for interim periods may not be indicative of the results of operations for a full year.

The Company’s operations are organized into two segments:

Aerospace and Defense — includes the operations of the Company’s wholly-owned subsidiary Aerojet Rocketdyne, Inc. ("Aerojet Rocketdyne"), a leading technology-based designer, developer and manufacturer of aerospace and defense products and systems for the United States ("U.S.") government, including the Department of Defense ("DoD"), the National Aeronautics and Space Administration ("NASA"), and major aerospace and defense prime contractors.

Real Estate — includes the activities of the Company’s wholly-owned subsidiary Easton Development Company, LLC ("Easton") related to the re-zoning, entitlement, sale, and leasing of the Company’s excess real estate assets.

The fiscal year of the Company's subsidiary, Aerojet Rocketdyne, ends on the last Saturday in December.

A detailed description of the Company’s significant accounting policies can be found in the Company’s most recent Annual Report on Form 10-K for the year ended December 31, 2021.

Revision of Previously Issued Consolidated Financial Statements

During the three months ended March 31, 2022, the Company identified an error in its accounting for income taxes associated with its 2.25% Convertible Senior Notes ("2¼% Notes"). Upon issuance of the 2¼% Notes in 2016, the Company did not record the applicable deferred tax liability associated with the conversion option that had been recorded in other capital, which resulted in an overstatement of other capital, an understatement of deferred tax liabilities and an error in income tax expense in subsequent periods. The Company evaluated the errors and concluded that the errors were not material, either individually or in aggregate, to its current or previously issued consolidated financial statements.

To correct the immaterial errors, the Company has revised its previously issued consolidated financial statements as of December 31, 2021 and 2020, and for each of the three years ended December 31, 2021, 2020, and 2019, and its unaudited condensed consolidated financial statements as of and for the quarters and year-to-date periods ended March 31, 2021, June 30, 2021, and September 30, 2021. The revision of the historical consolidated financial statements also includes the correction of an immaterial misclassification in its unaudited condensed consolidated balance sheet as of December 31, 2020.

Accordingly, the accompanying financial statements and relevant footnotes to the unaudited condensed consolidated financial statements in this Quarterly Report on Form 10-Q have been revised to correct for such immaterial errors. See Note 12 for additional information. The Company will present the revision of its previously issued consolidated financial statements as of December 31, 2021, and for the years ended December 31, 2021 and 2020, in connection with the future filing of its 2022 Annual Report on Form 10-K. Additionally, the Company will present the revision of its previously issued condensed consolidated financial statements as of and for the three and six months ended June 30, 2021, and as of and for the three and nine months ended September 30, 2021, in connection with the future filings of its Quarterly Reports on Form 10-Q.

Terminated Merger Agreement

On December 20, 2020, the Company entered into an Agreement and Plan of Merger (the "Merger Agreement") with Lockheed Martin Corporation ("Lockheed Martin") and Mizar Sub, Inc., a wholly-owned subsidiary of Lockheed Martin ("Merger Sub"), pursuant to which each share of common stock of the Company would have been automatically converted into the right to receive cash in an amount equal to $51.00 per share, adjusted from $56.00 following the payment of a one-time cash dividend of $5.00 per share paid in March 2021 (the "Pre-Closing Dividend") and the Company would have become a wholly-owned subsidiary of Lockheed Martin (the "Merger").

On January 25, 2022, the Federal Trade Commission ("FTC") filed a complaint against the Company and Lockheed Martin in the FTC’s administrative court and a complaint in U.S. federal court seeking a preliminary injunction to stop the deal pending an administrative trial (the "FTC Litigation"). On February 13, 2022, Lockheed Martin notified the Company that it had elected to

6

terminate the Merger Agreement. On February 14, 2022, pursuant to the parties’ joint motion, the administrative complaint and the U.S. federal court complaint were dismissed.

Coronavirus ("COVID-19") Pandemic

During the three months ended March 31, 2022, the Company’s financial results and operations were not materially adversely impacted by the COVID-19 pandemic. The extent to which the Company’s future financial results could be impacted by the COVID-19 pandemic depends on future developments that are highly uncertain and cannot be predicted at this time. The Company is not aware of any specific event or circumstance that would require an update to its estimates or judgments or a revision of the carrying value of its assets or liabilities as of the date of issuance of this Quarterly Report on Form 10-Q. These estimates may change, as new events occur and additional information is obtained. Actual results could differ materially from these estimates under different assumptions or conditions.

Recently Issued Accounting Pronouncements

In August 2020, the Financial Accounting Standards Board issued guidance which simplifies the accounting for convertible instruments. This guidance eliminates certain models that require separate accounting for embedded conversion features, in certain cases. Additionally, among other changes, the guidance eliminates certain of the conditions for equity classification for contracts in an entity’s own equity. The guidance also requires entities to use the if-converted method for all convertible instruments in the diluted earnings per share calculation and include the effect of share settlement for instruments that may be settled in cash or shares, except for certain liability-classified share-based payment awards. The Company adopted the new guidance as of January 1, 2022, using the modified retrospective approach resulting in the following adjustment (i) a decrease of $1.9 million in deferred tax liabilities, (ii) a decrease of $5.6 million in other capital, (iii) a decrease of $1.0 million in retained earnings, and (iv) an increase of $8.5 million in debt.

Note 2. Earnings Per Share ("EPS") of Common Stock

The following table reconciles the numerator and denominator used to calculate basic and diluted EPS of common stock:

	Three months ended March 31,
	2022		2021
	(In millions, except per share amounts)
Numerator:
Net income	$	27.8	$	18.1
Income allocated to participating securities	(0.1)		(0.1)
Net income for basic EPS	$	27.7	$	18.0
Interest on 2¼% Notes	0.7		—
Net income for diluted EPS	$	28.4	$	18.0
Denominator:
Basic weighted average shares	80.2		77.6
Effect of:
21/4% Notes	5.6		3.1
Diluted weighted average shares	85.8		80.7
Basic
Basic EPS	$	0.34	$	0.23
Diluted
Diluted EPS	$	0.33	$	0.22

Securities which would have been anti-dilutive are insignificant and are excluded from the computation of diluted earnings per share in all periods presented.

The increase in the dilutive effect of the 2¼% Notes in the three months ended March 31, 2022, is the result of the adoption of new accounting guidance. See Note 1.

Note 3. Revenue Recognition

In the Company’s Aerospace and Defense segment, the majority of revenue is earned from long-term contracts to design, develop, and manufacture aerospace and defense products for, and provide related services to, the Company’s customers, including the U.S. government and major aerospace and defense prime contractors.

The Company evaluates the contract value and cost estimates for performance obligations at least quarterly and more frequently when circumstances significantly change. Factors considered in estimating the work to be completed include, but are not limited to: labor productivity, the nature and technical complexity of the work to be performed, availability and cost volatility of materials, subcontractor and vendor performance, warranty costs, volume assumptions, anticipated labor agreements, inflationary trends, schedule and performance delays, availability of funding from the customer, and the recoverability of costs incurred outside the original contract included in any estimates to complete. When the Company’s estimate of total costs to be incurred to satisfy a performance obligation exceeds the expected revenue, the Company recognizes the loss immediately. When the Company determines that a change in estimates has an impact on the associated profit of a performance obligation,

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the Company records the cumulative positive or negative adjustment to the statement of operations. Changes in estimates and assumptions related to the status of certain long-term contracts may have a material effect on the Company’s operating results. The following table summarizes the impact of the changes in significant contract accounting estimates on the Company’s Aerospace and Defense segment operating results:

	Three months ended March 31,
	2022		2021
	(In millions, except per share amounts)
Net unfavorable effect of the changes in contract estimates on net sales	$	(0.2)	$	(1.9)
Net unfavorable effect of the changes in contract estimates on income before income taxes	(2.7)		(2.4)
Net unfavorable effect of the changes in contract estimates on net income	(2.0)		(1.9)
Net unfavorable effect of the changes in contract estimates on basic and diluted EPS	(0.02)		(0.02)

In the Company’s Aerospace and Defense segment, the timing of revenue recognition, customer invoicing, and collections produces accounts receivable, contract assets, and contract liabilities in the unaudited condensed consolidated balance sheets. The following table summarizes contract assets and liabilities:

	March 31, 2022		December 31, 2021
	(In millions)
Contract assets	$	378.6	$	359.6
Reserve for overhead rate disallowance	(6.6)		(5.4)
Contract assets, net of reserve	372.0		354.2
Contract liabilities	366.7		366.5
Net contract assets (liabilities), net of reserve	$	5.3	$	(12.3)

Net contract assets increased by $17.6 million from December 31, 2021, primarily due to an increase in unbilled receivables. During the three months ended March 31, 2022, the Company recognized sales of $121.8 million that were included in the Company's contract liabilities as of December 31, 2021.

As of March 31, 2022, the Company’s total remaining performance obligations, also referred to as backlog, totaled $6.4 billion. The Company expects to recognize approximately 37%, or $2.4 billion, of the remaining performance obligations as sales over the next twelve months, an additional 26% the following twelve months, and 37% thereafter.

The Company's contracts are largely categorized as either "fixed-price" (largely used by the U.S. government for production-type contracts) or "cost-reimbursable" (largely used by the U.S. government for development-type contracts). Fixed-price contracts present the risk of unreimbursed cost overruns, potentially resulting in lower than expected contract profits and margins. This risk is generally lower for cost-reimbursable contracts which, as a result, generally have a lower margin. The following table summarizes the percentages of net sales by contract type:

	Three months ended March 31,
	2022		2021
Fixed-price	56	%	51	%
Cost-reimbursable	44		49

The principal end user customers are primarily agencies of the U.S. government as illustrated in the following table:

	Three months ended March 31,
	2022		2021
U.S. government	95	%	97	%
Non U.S. government	5		3

The Company's Real Estate segment represented less than 1% of the Company's net sales for the three months ended March 31, 2022 and 2021.

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Note 4. Stock-Based Compensation

The following table summarizes stock-based compensation by type of award:

	Three months ended March 31,
	2022		2021
	(In millions)
Stock Appreciation Rights	$	(4.9)	$	(1.7)
Restricted stock and restricted stock units, service based	1.4		1.3
Restricted stock and restricted stock units, performance based	2.6		2.9
Employee stock purchase plan	—		0.3
Total stock-based compensation (benefit) expense	$	(0.9)	$	2.8

Note 5. Balance Sheet Accounts

a. Fair Value of Financial Instruments

Financial instruments are classified using a three-tiered fair value hierarchy, which prioritizes the inputs used in measuring fair value. These tiers include: Level 1, defined as observable inputs such as quoted prices in active markets; Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable; and Level 3, defined as unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions.

			Fair value measurement as of March 31, 2022
	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Other Observable Inputs (Level 2)		Unobservable Inputs (Level 3)
	(In millions)
Money market funds	$	360.5	$	360.5	$	—	$	—
Registered investment companies	1.2		1.2		—		—
Commercial paper	139.9		—		139.9		—
Equity securities	10.1		10.1		—		—
Total	$	511.7	$	371.8	$	139.9	$	—

			Fair value measurement as of December 31, 2021
	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Other Observable Inputs (Level 2)		Unobservable Inputs (Level 3)
	(In millions)
Money market funds	$	388.6	$	388.6	$	—	$	—
Registered investment companies	1.3		1.3		—		—
Commercial paper	35.0		—		35.0		—
Equity securities	10.6		10.6		—		—
Total	$	435.5	$	400.5	$	35.0	$	—

As of March 31, 2022 and December 31, 2021, the total estimated fair value for commercial paper was classified as cash and cash equivalents as the remaining maturity at date of purchase was less than three months.

The carrying amounts of certain of the Company’s financial instruments, including cash and cash equivalents, restricted cash, accounts receivable, accounts payable, accrued compensation, and other accrued liabilities, approximate fair value because of their short maturities.

The following table summarizes the estimated fair value and principal amount for outstanding debt obligations excluding finance lease obligations:

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	Fair Value				Principal Amount
	March 31, 2022		December 31, 2021		March 31, 2022		December 31, 2021
	(In millions)
Term loan	$	269.8	$	275.8	$	275.6	$	282.2
21/4% Notes	229.9		266.1		145.9		145.9
Total	$	499.7	$	541.9	$	421.5	$	428.1

The fair value of the 2¼% Notes was determined using broker quotes that are based on open markets for the Company's debt securities (Level 2 securities). The fair value of the term loan was estimated based on a third-party model used to derive a relative value price using comparable corporate loans within a similar industry, credit quality, and currency.

b. Accounts Receivable

	March 31, 2022		December 31, 2021
	(In millions)
Billed receivables under long-term contracts	$	143.2	$	60.3
Other trade receivables	0.2		0.3
Accounts receivable	$	143.4	$	60.6

c. Other Current Assets

	March 31, 2022		December 31, 2021
	(In millions)
Deferred costs recoverable from the U.S. government	$	40.4	$	37.4
Income tax receivable	—		13.8
Inventories	11.1		10.0
Prepaid expenses	15.5		15.3
Other	26.6		23.0
Other current assets	$	93.6	$	99.5

d. Property, Plant and Equipment, net

	March 31, 2022		December 31, 2021
	(In millions)
Land	$	71.1	$	71.1
Buildings and improvements	505.1		503.0
Machinery and equipment, including capitalized software	501.6		499.1
Construction-in-progress	48.8		50.0
	1,126.6		1,123.2
Less: accumulated depreciation	(713.3)		(702.1)
Property, plant and equipment, net	$	413.3	$	421.1

e. Other Noncurrent Assets

	March 31, 2022		December 31, 2021
	(In millions)
Real estate held for entitlement and leasing	$	103.8	$	103.7
Deferred costs recoverable from the U.S. government	62.2		62.1
Receivable from Northrop Grumman Corporation for environmental remediation costs	33.0		34.5
Other	37.3		43.0
Other noncurrent assets	$	236.3	$	243.3

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f. Other Current Liabilities

	March 31, 2022		December 31, 2021
	(In millions)
Accrued compensation and employee benefits	$	103.5	$	122.0
Income taxes payable	42.7		—
Other	66.9		50.7
Other current liabilities	$	213.1	$	172.7

As of March 31, 2022, the income tax payable balance totaled $42.7 million. The increase in the income tax payable balance compared with an income tax receivable balance of $13.8 million as of December 31, 2021, is primarily the result of the elimination of the option for the Company to deduct Research and Development ("R&D") expenditures in the current period and requires the Company to capitalize such costs and amortize the costs over five years when incurred in the U.S.

Note 6. Income Taxes

	Three months ended March 31,
	2022		2021
	(In millions)
Income tax provision	$	10.5	$	5.6

In the three months ended March 31, 2022, the income tax provision was $10.5 million for an effective tax rate of 27.4%. The Company’s effective tax rate differed from the 21% statutory federal income tax rate primarily due to state income taxes and certain expenditures which are permanently not deductible for tax purposes, partially offset by the impact of R&D credits and original issue discount on convertible debt.

In the three months ended March 31, 2021, the income tax provision was $5.6 million for an effective tax rate of 23.6%. The Company’s effective tax rate differed from the 21% statutory federal income tax rate primarily due to state income taxes and certain expenditures which are permanently not deductible for tax purposes, partially offset by the impact of R&D credits.

A valuation allowance is required when it is more-likely-than-not that all or a portion of deferred tax assets may not be realized. Assessing the need for a valuation allowance requires management to evaluate, on a quarterly basis, all available evidence, both positive and negative. As of March 31, 2022, the Company continues to believe that the weight of the positive evidence outweighed the negative evidence regarding the realization of its net deferred tax assets.

Note 7. Long-term Debt

	March 31, 2022		December 31, 2021
	(In millions)
Term loan, bearing interest at variable rates (rate of 2.21% as of March 31, 2022), maturing in September 2023	$	275.6	$	282.2
Unamortized deferred financing costs	(0.7)		(0.8)
Total senior debt	274.9		281.4
Convertible senior notes, bearing interest at 2.25% per annum, interest payments due in June and December, maturing in December 2023	145.9		145.9
Unamortized discount and deferred financing costs	(0.7)		(9.4)
Total convertible senior notes	145.2		136.5
Finance leases	42.9		43.4
Total other debt	42.9		43.4
Total debt, net of unamortized discount and deferred financing costs	463.0		461.3
Less: Amounts due within one year	(177.3)		(166.7)
Total long-term debt, net of unamortized discount and deferred financing costs	$	285.7	$	294.6

Senior Credit Facility

The senior secured senior credit facility (the "Senior Credit Facility") matures on September 20, 2023, and consists of (i) a $650.0 million revolving line of credit (the "Revolver") and (ii) a $350.0 million term loan (the "Term Loan").

As of March 31, 2022, the Company had zero borrowings under the Revolver and issued $27.8 million in letters of credit.

The Term Loan and any borrowings under the Revolver bear interest at LIBOR plus an applicable margin ranging from 175 to 250 basis points based on the Company's leverage ratio (the "Consolidated Net Leverage Ratio") measured at the end of each quarter. In addition to interest, the Company must pay certain fees including (i) letter of credit fees ranging from 175 to 250 basis

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points per annum on the amount of issued but undrawn letters of credit and eurocurrency rate loans and (ii) commitment fees ranging from 30 to 45 basis points per annum on the unused portion of the Revolver. 

The Term Loan amortized at a rate of 7.5% per annum as of March 31, 2022, and increasing to 10.0% per annum from December 31, 2022, to be paid in equal quarterly installments with any remaining amounts, along with outstanding borrowings under the Revolver, due on the maturity date. Outstanding borrowings under the Revolver and the Term Loan may be voluntarily repaid at any time, in whole or in part, without premium or penalty.

The Senior Credit Facility is secured by a first priority security interest in the Company’s assets, subject to certain customary exceptions, as well as pledges of its equity interests in certain subsidiaries.

The Senior Credit Facility contains financial covenants requiring the Company to (i) maintain an interest coverage ratio (the "Consolidated Interest Coverage Ratio") of not less than 3.00 to 1.00 and (ii) maintain a Consolidated Net Leverage Ratio not to exceed 3.50 to 1.00 provided that the maximum leverage ratio for all periods shall be increased by 0.50 to 1.00 for two consecutive quarters after consummation of a qualified acquisition. 

The Company may generally make certain investments, redeem debt subordinated to the Senior Credit Facility and make certain restricted payments (such as stock repurchases and dividends) if the Company's Consolidated Net Leverage Ratio does not exceed 3.25 to 1.00 pro forma for such transaction. The Company is otherwise subject to customary covenants including limitations on asset sales, incurrence of additional debt, and limitations on certain investments and restricted payments.

The Company was in compliance with its financial and non-financial covenants as of March 31, 2022.

2¼% Convertible Senior Notes

The Company adopted the new accounting guidance for convertible instruments effective January 1, 2022, using the modified retrospective method, with the cumulative effect recognized as of January 1, 2022. The primary impact of the new guidance was removing the requirement for the Company to account for beneficial conversion features and cash conversion features in equity, separately from the 2¼% Notes and requires the Company to use the if-converted method for the 2¼% Notes in the diluted earnings per share calculation. See Notes 1 and 2 for additional information.

On December 14, 2016, the Company issued $300.0 million aggregate principal amount of 2¼% Notes in a private placement to qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended.

Holders may convert their 2¼% Notes at their option from April 1, 2022, through June 30, 2022, because the Company's closing stock price exceeded $33.80 for at least 20 days in the 30 day period prior to March 31, 2022. The Company has a stated intention to cash settle the principal amount of the 2¼% Notes with the conversion premium to be settled in common shares. Accordingly, the net balance of the 2¼% Notes of $145.2 million is classified as a current liability as of March 31, 2022.

As more fully described in the indenture governing the 2¼% Notes, the holders of the 2¼% Notes may surrender all or any portion of their 2¼% Notes for conversion at any time during any calendar quarter, (and only during such calendar quarter), if the last reported sale price of the Company's common stock for at least 20 trading days (whether or not consecutive) during the period of 30 consecutive trading days ending on the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% ($33.80) of the conversion price on each applicable trading day.

The following table summarizes information regarding the 2¼% Notes (in millions, except years, percentages, conversion rate, and conversion price):

	March 31, 2022			December 31, 2021
Remaining amortization period (years)	1.75			2.0
Effective interest rate	2.6		%	5.8		%
Conversion rate (shares of common stock per $1,000 principal amount)	38.4615			38.4615
Conversion price (per share of common stock)	$	26.00		$	26.00

Based on the Company's closing stock price of $39.35 on March 31, 2022, the if-converted value of the 2¼% Notes exceeded the aggregate principal amount of the 2¼% Notes by $74.9 million.

The following table presents the interest expense components for the 2¼% Notes:

	Three months ended March 31,
	2022		2021
	(In millions)
Interest expense-contractual interest	$	0.8	$	0.8
Interest expense-amortization of debt discount (see discussion above)	—		1.1
Interest expense-amortization of deferred financing costs	0.1		0.1

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Note 8. Commitments and Contingencies

a. Legal Matters

The Company and its subsidiaries are subject to legal proceedings, including litigation in U.S. federal and state courts, which arise out of, and are incidental to, the ordinary course of the Company’s on-going and historical businesses. The Company is also subject from time to time to governmental investigations by federal and state agencies. The Company cannot predict the outcome of such proceedings with any degree of certainty. Loss contingency provisions are recorded for probable losses at management’s best estimate of a loss. When only a range of amounts can be reasonably estimated and no amount within the range is more likely than another, the low end of the range is recorded. These estimates are often initially developed substantially earlier than when the ultimate loss is known, and are refined each quarterly reporting period as additional information becomes available.

Merger-Related FTC Litigation

On January 25, 2022, the U.S. Federal Trade Commission filed a complaint against Lockheed Martin and the Company in the FTC’s administrative court pursuant to Part 3 of the Federal Trade Commission Act. The FTC also filed a complaint in the U.S. District Court for the District of Columbia ("DDC") seeking a Preliminary Injunction to stop the deal pending an administrative trial, which was scheduled to begin on June 16, 2022. The FTC’s administrative complaint alleged that the Merger Agreement constituted an unfair method of competition in violation of Section 5 of the Federal Trade Commission Act and both the administrative complaint and the DDC complaint alleged that the Merger, if consummated, would have substantially lessened competition in relevant markets in violation of Section 7 of the Clayton Act. The administrative complaint sought the following remedies: if the Merger was consummated, divestiture or reconstitution of all associated and necessary assets, in a manner that restores competition in relevant markets; a prohibition against any transaction between the Company and Lockheed Martin that combined the businesses in relevant markets except as approved by the FTC; a requirement that, for a period of time, the Company and Lockheed Martin provide prior notice to the FTC of acquisitions, mergers, consolidations, or any other combinations of their businesses in relevant markets; a requirement to file periodic compliance reports with the FTC; and any other relief appropriate to correct or remedy the anticompetitive effects of the transaction or to restore the Company as a viable, independent competitor in the relevant markets. The Merger Agreement provided that Lockheed Martin could elect to defend against the FTC Litigation within 30 days of the filing of the litigation or terminate the Merger Agreement. On February 13, 2022, Lockheed Martin notified the Company that it had elected to terminate the Merger Agreement. On February 14, 2022, pursuant to the parties’ joint motion, the administrative complaint and DDC complaint were dismissed.

Proxy Contest Litigation

In early 2022, disagreements relating to the election of directors to the Company’s Board at the Company’s 2022 Annual Meeting of Stockholders (the "Annual Meeting") developed among the Company’s directors. The Company’s eight-member Board was evenly divided between Warren G. Lichtenstein, James R. Henderson, Audrey A. McNiff and Martin Turchin (the "LHMT Directors") and Thomas Corcoran, General Kevin P. Chilton USAF (Ret.), Eileen P. Drake and General Lance W. Lord, USAF (Ret.) (the "CCDL Directors"). On January 28, 2022, SPH Group Holdings LLC (SPH), a company affiliated with Mr. Lichtenstein, nominated a slate of seven directors, including the LHMT Directors, for election. The directors then filed two separate lawsuits in the Court of Chancery of the State of Delaware. On February 7, 2022, the LHMT Directors filed C.A. No. 2022-0127-LWW and on February 11, 2022, the CCDL Directors filed C.A. No. 2022-0146-LWW.

The LHMT Complaint

The LHMT Directors filed suit against the CCDL Directors and named the Company as a nominal party to the lawsuit. The LHMT Directors sought, among other things:

•A declaratory judgment that no CCDL Director nor Aerojet officer, director, employee or anyone else acting or purporting to act on the Company’s behalf may speak on behalf of the Company or take any action on behalf of the Company without proper authorization from the Board or a duly authorized committee of the Board under Delaware law;

•A declaratory judgment that, so long as the Board is evenly divided regarding the election at the Annual Meeting, no officer, employee, advisor or agent of the Company shall take action on behalf of the Company for the purpose of directly or indirectly supporting either the LHMT Directors or the CCDL Directors in connection with the election at the Annual Meeting. Instead, so long as the Board is evenly divided in connection with the election, the Company must remain neutral on that subject;

•A declaration that alleged actions purportedly taken by the CCDL Directors on behalf of the Company without proper authorization were unauthorized, invalid and void;

•A permanent injunction prohibiting the CCDL Directors from taking any action or purporting to take any action on behalf of the Company without proper authorization; and

•A permanent injunction specifying that the Company and its officers, employees agents and advisors in their capacity as such shall remain neutral in any electoral dispute between the LHMT Directors and the CCDL Directors.

The LHMT Directors also moved for a temporary restraining order, which the CCDL Directors opposed and which would, among other things, prevent the CCDL Directors and Aerojet’s officers, directors, employees, advisors, and agents, without prior written approval of the Board, from (1) making any public statements or disclosures, on behalf of or in the name of the Company in support of the election efforts of any candidate for election at the Annual Meeting and (2) acting on behalf of or in the name of the Company or using Company resources in support of the election efforts of any candidate for election at the Annual Meeting.

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The CCDL Complaint

The CCDL Directors filed suit against the LHMT Directors and SPH, and named the Company as a plaintiff and a nominal defendant in the lawsuit. The LHMT Directors dispute that the CCDL Directors were authorized to name the Company as a plaintiff.

The CCDL Directors sought, among other things:

•The appointment of a special committee of Gen. Chilton, Mr. Corcoran, and Gen. Lord to manage the Company’s response to the alleged proxy contest launched by the LHMT Directors, or, in the alternative, appointment of a custodian pursuant to 8 Del. C. § 226(a)(2);

•A declaration that the LHMT Directors are interested with respect to the alleged proxy contest by virtue of their inclusion in SPH’s nominated slate;

•A declaration that the LHMT Directors breached their fiduciary duties by allegedly engaging in unauthorized communications regarding the Lockheed Martin merger and by allegedly participating in discussions regarding, and voting on, matters in which they are self-interested;

•A declaration that the LHMT Directors breached their fiduciary duties by allegedly failing to disclose material information about Mr. Lichtenstein’s alleged machinations to take control of Aerojet in their filing with the Securities and Exchange Commission regarding SPH’s nomination of directors and a declaration that the notice on that topic had violated the Company’s advance-notice bylaw for the same reason; and

•The removal of Mr. Lichtenstein as a director as a consequence for alleged breaches of his fiduciary duty of loyalty, pursuant to 8 Del. C. § 225(c).

Consolidation and Development of the LHMT and CCDL Actions

At a hearing on February 15, 2022, the Court of Chancery granted the LHMT Plaintiffs’ motion for a temporary restraining order and ordered the parties to submit a proposed form of order reflecting the Court’s instructions issued during the hearing. The Court also noted the parties’ agreement to consolidate the two separately filed cases, and ordered the parties to submit a proposed order.

On February 23, 2022, the Court of Chancery entered a temporary restraining order that provided, among other things, that:

•No party to this Action, no officer, director, employee, advisor or agent of the Company, no person or entity purporting to have authority over the Company, and no person or entity acting in concert with any of the foregoing who has notice of this order, shall, absent prior written Board approval (i) make any public statement, issue any press release or make any disclosure on behalf of or in the name of the Company in support of the election efforts of any candidate for election at the Company’s 2022 Annual Meeting, or (ii) take action on behalf of or in the name of the Company or use or otherwise deploy Company funds or other Company resources in support of the election efforts of any candidate for election at the Annual Meeting.

•The Company shall retain independent counsel agreed upon and authorized by at least 5 members of the Board in connection with the two actions filed by the directors.

On February 25, 2022, the Court of Chancery entered an order consolidating the foregoing actions into one action captioned In Re Aerojet Rocketdyne Holdings, Inc., (Consolidated C.A. No. 2022-0127-LWW), and setting a trial date for the combined actions of May 23-25, 2022.

On March 1, 2022, the CCDL Directors nominated a slate of directors for election to the Company’s board.

On March 7, 2022, the CCDL Directors dismissed without prejudice the claims they had asserted in the CCDL Complaint. The claims that were purportedly asserted by the Company in the CCDL Complaint remain pending as of March 31, 2022.

On March 22, 2022, the Court of Chancery held a hearing on the CCDL Directors’ motion for entry of a final order and judgment and the LHMT Directors’ motions for leave to supplement their complaint and to enforce the Court’s temporary restraining order. The Court denied the CCDL Directors’ motion and granted the LHMT Directors’ motions, ordering that neutral counsel to represent the Company in this action shall be retained, by the agreement of at least 5 members of the Company’s Board, within seven days of this Order. The Company has since retained neutral counsel in accordance with the Court’s orders.

Asbestos Litigation

The Company has been, and continues to be, named as a defendant in lawsuits alleging personal injury or death and seeking various monetary damages due to exposure to asbestos in building materials, products, or in manufacturing operations. The majority of cases are pending in Illinois state courts. There were 133 asbestos cases pending as of March 31, 2022.

Given the lack of any significant consistency to claims (i.e., as to product, operational site, or other relevant assertions) filed against the Company, the Company is generally unable to make a reasonable estimate of the future costs of pending claims or unasserted claims. The aggregate settlement costs and legal and administrative fees associated with the Company’s asbestos litigation has been immaterial for the last three years. As of March 31, 2022, the Company has accrued an immaterial amount related to pending claims.

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United States ex. rel. Markus vs. Aerojet Rocketdyne Holdings

In the case captioned United States ex. rel. Markus vs. Aerojet Rocketdyne Holdings, Inc. et al., Case No. 2:15-CV-02245- WBS-AC, the Department of Justice completed its review of the case and declined to intervene in June 2018. The case was originally filed under seal in the U.S. District Court, Eastern District of California in September 2017 and alleged causes of action against the Company based on false claims, retaliation, and wrongful termination of employment seeking injunctive relief, civil penalties, and compensatory and punitive damages. In February 2019, the Company filed a Motion to Dismiss the False Claims Act ("FCA") counts of the complaint and a Motion to Compel Arbitration on the employment based claims. In May 2019, the court dismissed one count of the FCA claim, denied the motion to dismiss the remaining FCA counts, and moved the employment based claims to arbitration. In September 2021, each party filed a motion for summary judgment. In February 2022, the Court denied Relator’s motion for summary judgment in full and granted the Company’s motion for summary judgment in part. Specifically, the Court rejected Relator’s false certification allegations in their entirety while also significantly diminishing the number of U.S. government contracts at issue in the litigation, which number excludes both the majority of contracts specified in Relator’s Second Amended Complaint ("SAC") as well as numerous contracts regarding which Relator purported to make claims but that were not specified in the SAC. The Court found disputed issues of material fact with regard to the remaining contracts. Trial in this matter commenced on April 26, 2022. On April 27, 2022, the Company agreed to a settlement in principle as to Relator’s remaining FCA claims in the amount of $9.0 million, as well as an attorney’s fee award of $3.0 million. The settlement is subject to final approval by the U.S. Department of Justice.

City of Wabash, Indiana v. Aerojet Rocketdyne Holdings

On November 15, 2021, a lawsuit entitled City of Wabash, Indiana v. Aerojet Rocketdyne Holdings, Inc., Case No. 3:21-cv-878 was filed in the United States District Court for the Northern District of Indiana against the Company alleging causes of action under the Comprehensive Environmental Response Compensation and Liability Act and the Indiana Environmental Legal Action Statute and seeking damages, reasonable attorneys’ fees and costs. The action was served on the Company on January 11, 2022. The Company will vigorously contest the complaint’s allegations and has not recorded any liability for this matter as of March 31, 2022.

b. Environmental Matters

The Company is involved in approximately 40 environmental matters under the Comprehensive Environmental Response Compensation and Liability Act, the Resource Conservation Recovery Act, and other federal, state, and local laws relating to soil and groundwater contamination, hazardous waste management activities, and other environmental matters at some of its current and former facilities. The Company is also involved in a number of remedial activities at third party sites, not owned by the Company, where it is designated a potentially responsible party ("PRP") by either the U.S. Environmental Protection Agency ("EPA") and/or a state agency. In many of these matters, the Company is involved with other PRPs. In some instances, the Company’s liability and proportionate share of costs have not been determined largely due to uncertainties as to the nature and extent of site conditions and the Company’s involvement. While government agencies frequently claim PRPs are jointly and severally liable at such sites, in the Company’s experience, interim and final allocations of liability and costs are generally made based on relative contributions of waste or contamination. Anticipated costs associated with environmental remediation that are probable and estimable are accrued. In cases where a date to complete remedial activities at a particular site cannot be determined by reference to agreements or otherwise, the Company projects costs over an appropriate time period not exceeding 15 years. In such cases, generally the Company does not have the ability to reasonably estimate environmental remediation costs that are beyond this period. Factors that could result in changes to the Company’s estimates include completion of current and future soil and groundwater investigations, new claims, future agency demands, discovery of more or less contamination than expected, discovery of new contaminants, modification of planned remedial actions, changes in estimated time required to remediate, new technologies, and changes in laws and regulations.

As of March 31, 2022, the aggregate range of these anticipated environmental costs was $293.7 million to $451.2 million and the accrued amount was $293.7 million. See Note 8(c) for a summary of the environmental reserve activity. Of these accrued liabilities, approximately 98% relates to the Company’s U.S. government contracting business, and a portion of this liability is recoverable. The significant environmental sites are discussed below. The balance of the accrued liabilities, which are not recoverable from the U.S. government, relate to other sites for which the Company’s obligations are probable and estimable.

Sacramento, California Site

In 1989, a federal district court in California approved a Partial Consent Decree ("PCD") requiring Aerojet Rocketdyne, among other things, to conduct a Remedial Investigation and Feasibility Study to determine the nature and extent of impacts due to the release of chemicals from the Sacramento, California site, monitor the American River and offsite public water supply wells, operate Groundwater Extraction and Treatment facilities that collect groundwater at the site perimeter, and pay certain government oversight costs. The primary chemicals of concern for both on-site and off-site groundwater are trichloroethylene, perchlorate, and n-nitrosodimethylamine. A 2002 PCD revision (a) separated the Sacramento site into multiple operable units to allow quicker implementation of remedies for critical areas; (b) required the Company to guarantee up to $75 million (in addition to a prior $20 million guarantee) to assure that Aerojet Rocketdyne’s Sacramento remediation activities are fully funded; and (c) removed approximately 2,600 acres of non-contaminated land from the EPA superfund designation. Obligations under the $75 million aggregate guarantee are limited to $10 million in any year. Both the $75 million aggregate guarantee and the $10 million annual limitation are subject to adjustment annually for inflation.

Aerojet Rocketdyne is involved in various stages of soil and groundwater investigation, remedy selection, design, construction, operation and maintenance associated with the operable units, all of which are conducted under the direction and oversight of the EPA, including unilateral administrative orders, and the California Department of Toxic Substances Control ("DTSC") and Regional Water Quality Control Board, Central Valley Region ("RWQCB"). On September 22, 2016, the EPA

15

completed its first five-year remedy review of the Sacramento superfund site. The five-year review required by statute and regulation applies to all remedial actions which result in hazardous substances above levels that allow unlimited use and unrestricted exposure. The Company worked with the EPA to address and remedy the findings of the 2016 five-year remedy review. On September 15, 2021, the EPA issued its second five-year remedy review and concluded that the remedies are functioning as intended for the soil and groundwater contamination and that the vapor intrusion investigation and mitigation activities are protective against vapor intrusion risks. The Company is working with the EPA, DTSC, and RWQCB on the implementation of required onsite land use restrictions.

The entire southern portion of the site known as Rio Del Oro was under state orders issued in the 1990s from DTSC and the RWQCB to investigate and remediate soil and groundwater contamination. In 2008, the DTSC released all but approximately 400 acres of the Rio Del Oro property from DTSC’s environmental orders regarding soil contamination although the property remains subject to the RWQCB’s orders to investigate and remediate groundwater environmental contamination emanating offsite from the property.

As of March 31, 2022, the estimated range of anticipated costs discussed above for the Sacramento, California site was $215.2 million to $349.2 million and the accrued amount was $215.2 million included as a component of the Company’s environmental reserves. Expenditures associated with this matter are partially recoverable. See Note 8(c) for further discussion on recoverability.

Baldwin Park Operable Unit ("BPOU")

As a result of its former Azusa, California operations, in 1994, Aerojet Rocketdyne was named a PRP by the EPA in the area of the San Gabriel Valley Basin superfund site known as the BPOU. In 2002, Aerojet Rocketdyne, along with seven other PRPs (the "Cooperating Respondents") signed a project agreement with the San Gabriel Basin Water Quality Authority, the Main San Gabriel Basin Watermaster, and five water companies. The 2002 project agreement terminated in 2017 and the parties executed a project agreement which became operational on May 9, 2017. The agreement has a ten-year term and requires the Cooperating Respondents to fund through an escrow account the ongoing operation, maintenance, and administrative costs of certain treatment and water distribution facilities owned and operated by the water companies. There are also provisions in the project agreement for maintaining financial assurance.

Pursuant to the 2017 agreement with the remaining Cooperating Respondents, Aerojet Rocketdyne's current share of future BPOU costs will be approximately 74%.

As part of Aerojet Rocketdyne’s sale of its Electronics and Information Systems ("EIS") business to Northrop Grumman Corporation ("Northrop") in October 2001, the EPA approved a prospective purchaser agreement with Northrop to absolve it of a pre-closing liability for contamination caused by the Azusa, California operations, which liability remains with Aerojet Rocketdyne. As part of that agreement, the Company agreed to provide a $25 million guarantee of its obligations under the project agreement.

As of March 31, 2022, the estimated range of anticipated costs was $61.6 million to $74.3 million and the accrued amount was $61.6 million included as a component of the Company’s environmental reserves. Expenditures associated with this matter are partially recoverable. See Note 8(c) for further discussion on recoverability.

c. Environmental Reserves and Estimated Recoveries

Environmental Reserves

The Company reviews on a quarterly basis estimated future remediation costs and has an established practice of estimating environmental remediation costs over a fifteen year period, except for those environmental remediation costs with a specific contractual term. Environmental liabilities at the BPOU site are currently estimated through the term of the project agreement, which expires in May 2027. As the period for which estimated environmental remediation costs lengthens, the reliability of such estimates decreases. These estimates consider the investigative work and analysis of engineers, outside environmental consultants, and the advice of legal staff regarding the status and anticipated results of various administrative and legal proceedings. In most cases, only a range of reasonably possible costs can be estimated. In establishing the Company’s reserves, the most probable estimate is used when determinable; otherwise, the minimum amount is used when no single amount in the range is more probable. Accordingly, such estimates can change as the Company periodically evaluates and revises these estimates as new information becomes available. The Company cannot predict whether new information gained as projects progress will affect the estimated liability accrued. The timing of payment for estimated future environmental costs is influenced by a number of factors, such as the regulatory approval process and the time required designing, constructing, and implementing the remedy.

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The following table summarizes the Company’s environmental reserve activity:

	Aerojet Rocketdyne- Sacramento		Aerojet Rocketdyne- BPOU		Other Aerojet Rocketdyne Sites		Total Aerojet Rocketdyne		Other		Total Environmental Reserve
	(In millions)
December 31, 2021	$	214.7	$	64.7	$	11.8	$	291.2	$	5.2	$	296.4
Additions/Adjustments	3.8		(0.4)		0.2		3.6		—		3.6
Expenditures	(3.3)		(2.7)		(0.3)		(6.3)		—		(6.3)
March 31, 2022	$	215.2	$	61.6	$	11.7	$	288.5	$	5.2	$	293.7

The effect of the final resolution of environmental matters and the Company’s obligations for environmental remediation and compliance cannot be accurately predicted due to the uncertainty concerning both the amount and timing of future expenditures and due to regulatory or technological changes. The Company continues its efforts to mitigate past and future costs through pursuit of claims for recoveries from insurance coverage and other PRPs and continued investigation of new and more cost effective remediation alternatives and associated technologies.

Estimated Recoveries

On January 12, 1999, Aerojet Rocketdyne and the U.S. government reached a settlement agreement ("Global Settlement") covering environmental costs associated with the Company's Sacramento site and its former Azusa site. Pursuant to the Global Settlement, the Company can recover 88% of its environmental remediation costs through the establishment of prices for Aerojet Rocketdyne's products and services sold to the U.S. government. Additionally, in conjunction with the sale of the EIS business in 2001, Aerojet Rocketdyne entered into an agreement with Northrop (the "Northrop Agreement") whereby Aerojet Rocketdyne is reimbursed by Northrop for a portion of environmental expenditures eligible for recovery under the Global Settlement, subject to an annual billing limitation of $6.0 million and a cumulative limitation of $189.7 million which was reached in June 2017. The following table summarizes the Northrop Agreement activity (in millions):

Total reimbursable costs under the Northrop Agreement	$	189.7
Amount reimbursed to the Company through March 31, 2022	(150.7)
Receivable from Northrop included in the unaudited balance sheet at March 31, 2022	$	39.0

Environmental remediation costs are primarily incurred by the Company's Aerospace and Defense segment, and certain of these costs are recoverable from the Company's contracts with the U.S. government. The Company currently estimates approximately 12% of its future Aerospace and Defense segment environmental remediation costs will not likely be reimbursable and are expensed. Allowable environmental remediation costs are charged to the Company’s contracts with the U.S. government as the costs are incurred. Because these costs are recovered through forward-pricing arrangements, the ability of Aerojet Rocketdyne to continue recovering these costs from the U.S. government depends on Aerojet Rocketdyne’s sustained business volume from U.S. government contracts and programs.

While the Company continues to seek an arrangement with the U.S. government to recover environmental expenditures in excess of the reimbursement ceiling identified in the Global Settlement, there can be no assurances that such a recovery will be obtained, or if not obtained, that such unreimbursed environmental expenditures will not have a materially adverse effect on the Company’s operating results, financial condition, and/or cash flows.

Environmental reserves and estimated recoveries impact to unaudited condensed consolidated statements of operations

The following table summarizes the financial information for the impact of environmental reserves and recoveries to the unaudited condensed consolidated statements of operations:

	Three months ended March 31,
	2022		2021
	(In millions)
Expense to unaudited condensed consolidated statements of operations	$	0.4	$	0.5

d. Arrangements with Off-Balance Sheet Risk

As of March 31, 2022, arrangements with off-balance sheet risk consisted of:

•$27.8 million in outstanding commercial letters of credit, the majority of which may be renewed, primarily to collateralize obligations for environmental remediation and insurance coverage.

•$56.6 million in outstanding surety bonds to primarily satisfy indemnification obligations for environmental remediation coverage

•$120.0 million aggregate in guarantees by the Company of Aerojet Rocketdyne’s obligations to U.S. government agencies for environmental remediation activities.

•Guarantees, jointly and severally, by the Company’s material domestic subsidiaries of their obligations under the Senior Credit Facility.

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In addition to the items discussed above, the Company has and will from time to time enter into certain types of contracts that require the Company to indemnify parties against potential third-party and other claims. These contracts primarily relate to: (i) divestiture agreements, under which the Company may provide customary indemnification to purchasers of its businesses or assets including, for example, claims arising from the operation of the businesses prior to disposition, and liability to investigate and remediate environmental contamination existing prior to disposition; (ii) certain real estate leases, under which the Company may be required to indemnify property owners for claims arising from the use of the applicable premises; and (iii) certain agreements with officers and directors, under which the Company may be required to indemnify such persons for liabilities arising out of their relationship with the Company. The terms of such obligations vary. Generally, a maximum obligation is not explicitly stated.

Additionally, the Company has open purchase orders and other commitments to suppliers, subcontractors, and other outsourcing partners for equipment, materials, and supplies in the normal course of business. These amounts are based on volumes consistent with anticipated requirements to fulfill purchase orders or contracts for product deliveries received, or expected to be received, from customers. A substantial portion of these amounts are recoverable through the Company's contracts with the U.S. government.

The Company provides product warranties in conjunction with certain product sales. The majority of the Company’s warranties are a one-year standard warranty for parts, workmanship, and compliance with specifications. On occasion, the Company has made commitments beyond the standard warranty obligation. While the Company has contracts with warranty provisions, there is not a history of any significant warranty claims experience. A reserve for warranty exposure is made on a product by product basis when it is both estimable and probable. These costs are included in the program’s estimate at completion and are expensed in accordance with the Company’s revenue recognition methodology as allowed under GAAP for that particular contract.

Note 9. Retirement Benefits

The following table presents the components of retirement benefits expense (income): 

	Pension Benefits				Postretirement Medical and Life Insurance Benefits
	Three months ended March 31,
	2022		2021		2022		2021
	(In millions)
Interest cost on benefit obligation	$	8.9	$	8.4	$	0.1	$	0.1
Expected return on assets	(15.7)		(15.3)		—		—
Amortization of net losses (gains)	7.7		15.9		(0.7)		(0.6)
Retirement benefits expense (income)	$	0.9	$	9.0	$	(0.6)	$	(0.5)

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Note 10. Operating Segments and Related Disclosures

The Company’s operations are organized into two operating segments based on different products and customer bases: Aerospace and Defense, and Real Estate. The following table presents selected financial information for each reportable segment:

	Three months ended March 31,
	2022		2021
	(In millions)
Net Sales:
Aerospace and Defense	$	510.5	$	495.5
Real Estate	0.6		0.6
Total Net Sales	$	511.1	$	496.1
Segment Performance:
Aerospace and Defense	$	62.7	$	52.4
Environmental remediation provision adjustments	(0.4)		(0.4)
GAAP/Cost Accounting Standards retirement benefits expense difference	9.2		3.2
Unusual items (see Note 11)	(16.3)		(1.7)
Aerospace and Defense Total	55.2		53.5
Real Estate	(0.1)		(0.3)
Total Segment Performance	$	55.1	$	53.2
Reconciliation of segment performance to income before income taxes:
Segment performance	$	55.1	$	53.2
Interest expense	(3.9)		(5.1)
Interest income and other	(0.2)		0.6
Stock-based compensation	0.9		(2.8)
Corporate retirement benefits	—		(1.7)
Corporate and other	(8.2)		(5.6)
Unusual items (see Note 11)	(5.4)		(14.9)
Income before income taxes	$	38.3	$	23.7

The following table summarizes customers that represented more than 10% of net sales:

	Three months ended March 31,
	2022		2021
Lockheed Martin	34	%	27	%
NASA	18		26
Raytheon Technologies Corporation	17		15

Note 11. Unusual Items

The following table presents total unusual items in the unaudited condensed consolidated statements of operations:

	Three months ended March 31,
	2022		2021
	(In millions)
Unusual items
Legal matters (component of other expense, net)	$	16.1	$	—
Proxy contest and related litigation costs (component of other expense, net)	3.1		—
Terminated merger costs (component of other expense, net)	2.5		7.5
Loss on debt	—		9.1
	$	21.7	$	16.6

In the three months ended March 31, 2022, the Company incurred $16.1 million associated with legal matters. See Note 8(a) for additional information.

In the three months ended March 31, 2022, the Company incurred $3.1 million of costs associated with the proxy contest and related litigation costs. See Note 8(a) for additional information.

In the three months ended March 31, 2022 and 2021, the Company incurred terminated merger costs of $2.5 million and $7.5 million, respectively. See Note 1 for additional information. The components of the terminated merger costs are as follows (in millions):

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	Three months ended March 31,
	2022		2021
	(In millions)
Legal	$	1.8	$	4.6
Employee compensation	0.3		2.1
Consulting and other professional costs	0.4		0.8
	$	2.5	$	7.5

In the three months ended March 31, 2021, the Company settled $135.4 million of its 2¼% Notes as a result of receiving conversion notices from the holders of the 2¼% Notes. The principal amount of $135.4 million was settled in cash and the conversion premium was settled in 2.6 million common shares. The Company incurred a pre-tax charge of $9.1 million in the three months ended March 31, 2021, associated with the settlement of the 2¼% Notes.

Note 12. Revision of Previously Issued Financial Statements

As disclosed in Note 1, during the three months ended March 31, 2022, the Company identified an immaterial error in its accounting for income taxes associated with its 2¼% Notes. Upon issuance of the 2¼% Notes in 2016, the Company did not record the applicable deferred tax liability associated with the conversion option that had been recorded in other capital, which resulted in an overstatement of other capital, an overstatement of deferred income taxes, an overstatement of other current assets, net and an error in income tax expense in subsequent periods. The Company evaluated the errors and concluded that the errors were not material, either individually or in aggregate, to its current or previously issued consolidated financial statements.

Due to the immaterial error related to the accounting for income taxes associated with the 2¼% Notes, the opening other capital balance as of January 1, 2019, 2020, and 2021 was overstated by $20.9 million. Additionally, the opening retained earnings balance as of January 1, 2019 and 2020, was understated by $7.9 million and $8.0 million, respectively, and the opening accumulated deficit as of January 1, 2021, was overstated by $7.8 million. During 2021 income tax expense was overstated by $2.9 million resulting in a cumulative understatement of retained earnings of $10.7 million as of December 31, 2021.

There were no changes to the unaudited condensed consolidated statement of operations and condensed consolidated statement of comprehensive income for the three months ended March 31, 2021. The revision to the accompanying unaudited condensed consolidated balance sheet, condensed consolidated statement of stockholders’ equity, and condensed consolidated statement of cash flows are as follows.

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Condensed Consolidated Balance Sheet

	As of December 31, 2021
	As Reported		Adjustments		As Revised
	(In millions)
ASSETS
Current Assets
Cash and cash equivalents	$	700.4	$	—	$	700.4
Restricted cash	3.0		—		3.0
Marketable securities	10.6		—		10.6
Accounts receivable, net	60.6		—		60.6
Contract assets	354.2		—		354.2
Other current assets, net	107.8		(8.3)		99.5
Total Current Assets	1,236.6		(8.3)		1,228.3
Noncurrent Assets
Right-of-use assets	52.6		—		52.6
Property, plant and equipment, net	421.1		—		421.1
Recoverable environmental remediation costs	226.2		—		226.2
Deferred income taxes	57.5		(1.9)		55.6
Goodwill	161.4		—		161.4
Intangible assets	34.9		—		34.9
Other noncurrent assets, net	243.3		—		243.3
Total Noncurrent Assets	1,197.0		(1.9)		1,195.1
Total Assets	$	2,433.6	$	(10.2)	$	2,423.4
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current Liabilities
Current portion of long-term debt	$	166.7	$	—	$	166.7
Accounts payable	132.2		—		132.2
Reserves for environmental remediation costs	37.7		—		37.7
Contract liabilities	366.5		—		366.5
Other current liabilities	172.7		—		172.7
Total Current Liabilities	875.8		—		875.8
Noncurrent Liabilities
Long-term debt	294.6		—		294.6
Reserves for environmental remediation costs	258.7		—		258.7
Pension benefits	255.9		—		255.9
Operating lease liabilities	41.3		—		41.3
Other noncurrent liabilities	173.8		—		173.8
Total Noncurrent Liabilities	1,024.3		—		1,024.3
Total Liabilities	1,900.1		—		1,900.1
Commitments and contingencies (Note 8)
Stockholders’ Equity
Common stock	8.0		—		8.0
Other capital	599.0		(20.9)		578.1
Treasury stock at cost	(64.4)		—		(64.4)
Retained earnings	91.9		10.7		102.6
Accumulated other comprehensive loss, net of income taxes	(101.0)		—		(101.0)
Total Stockholders’ Equity	533.5		(10.2)		523.3
Total Liabilities and Stockholders’ Equity	$	2,433.6	$	(10.2)	$	2,423.4

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Condensed Consolidated Statements of Stockholders’ Equity

	Three Months Ended March 31, 2021
	As Reported		Adjustments		As Revised
	(In millions)
Common stock	$	8.0	$	—	$	8.0
Other capital	583.3		(20.9)		562.4
Treasury stock	(64.4)		—		(64.4)
Accumulated deficit	(33.8)		7.8		(26.0)
Accumulated other comprehensive loss	(216.1)		—		(216.1)
Total stockholders' equity	$	277.0	$	(13.1)	$	263.9

Condensed Consolidated Statement of Cash Flows

	Three Months Ended March 31, 2021
	As Reported		Adjustments		As Revised
	(In millions)
Operating Activities
Net income	$	18.1	$	—	$	18.1
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	15.2		—		15.2
Amortization of debt discount and deferred financing costs	1.5		—		1.5
Stock-based compensation	2.8		—		2.8
Retirement benefits, net	(2.5)		—		(2.5)
Loss on debt	9.1		—		9.1
Other, net	(0.3)		—		(0.3)
Changes in assets and liabilities:
Accounts receivable, net	(130.7)		—		(130.7)
Contract assets	(11.9)		—		(11.9)
Other current assets, net	11.1		3.0		14.1
Recoverable environmental remediation costs	3.9		—		3.9
Other noncurrent assets	2.3		—		2.3
Accounts payable	(27.4)		—		(27.4)
Contract liabilities	29.9		—		29.9
Other current liabilities	14.6		—		14.6
Deferred income taxes	—		(3.0)		(3.0)
Reserves for environmental remediation costs	(5.3)		—		(5.3)
Other noncurrent liabilities and other	0.2				0.2
Net Cash Used in Operating Activities	(69.4)		—		(69.4)
Investing Activities
Net Cash Used in Investing Activities	(5.7)		—		(5.7)
Financing Activities
Net Cash Used in Financing Activities	(570.7)		—		(570.7)
Net Decrease in Cash, Cash Equivalents and Restricted Cash	(645.8)		—		(645.8)
Cash, Cash Equivalents and Restricted Cash at Beginning of Year	1,152.5		—		1,152.5
Cash, Cash Equivalents and Restricted Cash at End of Year	$	506.7	$	—	$	506.7

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

Unless otherwise indicated or required by the context, as used in this Quarterly Report on Form 10-Q, the terms "the Company," "we," "our" and "us" refer to Aerojet Rocketdyne Holdings, Inc. and all of its subsidiaries that are consolidated in conformity with accounting principles generally accepted in the United States of America ("GAAP").

The preparation of the consolidated financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Actual results could differ from those estimates. In addition, our operating results for interim periods may not be indicative of the results of operations for a full year or future periods. This section contains a number of forward-looking statements, all of which are based on current expectations and are subject to risks and uncertainties including those described in this Quarterly Report under the heading "Forward-Looking Statements" and as further detailed in Part I, Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2021, and Part II, Item 1A of this Quarterly Report. Actual results may differ materially. This section should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2021, and periodic reports subsequently filed with the Securities and Exchange Commission ("SEC").

Overview

Our operations are organized into two segments:

Aerospace and Defense — includes the operations of our wholly-owned subsidiary Aerojet Rocketdyne, Inc. ("Aerojet Rocketdyne"), a leading technology-based designer, developer and manufacturer of aerospace and defense products and systems for the United States ("U.S.") government, including the Department of Defense ("DoD"), the National Aeronautics and Space Administration ("NASA"), and major aerospace and defense prime contractors.

Real Estate — includes the activities of our wholly-owned subsidiary Easton Development Company, LLC ("Easton") related to the re-zoning, entitlement, sale, and leasing of our excess real estate assets.

Terminated Merger Agreement

On December 20, 2020, the Company entered into an Agreement and Plan of Merger (the "Merger Agreement") with Lockheed Martin Corporation ("Lockheed Martin") and Mizar Sub, Inc., a wholly-owned subsidiary of Lockheed Martin ("Merger Sub"), pursuant to which each share of common stock of the Company would have been automatically converted into the right to receive cash in an amount equal to $51.00 per share, adjusted from $56.00 following the payment of a one-time cash dividend of $5.00 per share paid in March 2021 (the "Pre-Closing Dividend") and the Company would have become a wholly-owned subsidiary of Lockheed Martin (the "Merger").

On January 25, 2022, the Federal Trade Commission ("FTC") filed a complaint against the Company and Lockheed Martin in the FTC’s administrative court and a complaint in U.S. federal court seeking a preliminary injunction to stop the deal pending an administrative trial (the "FTC Litigation"). On February 13, 2022, Lockheed Martin notified the Company that it had elected to terminate the Merger Agreement. On February 14, 2022, pursuant to the parties’ joint motion, the administrative complaint and the U.S. federal court complaint were dismissed.

Financial Highlights

A summary of the significant financial highlights for the three months ended March 31, 2022, which management uses to evaluate our operating performance and financial condition, is presented below. 

	Three months ended March 31,
	2022			2021
	(In millions, except percentage and per share amounts)
Net sales	$	511.1		$	496.1
Net income	27.8			18.1
Net income as a percentage of net sales	5.4		%	3.6		%
Adjusted Net Income (Non-GAAP measure*)	36.9			29.3
Adjusted Net Income (Non-GAAP measure*) as a percentage of net sales	7.2		%	5.9		%
Earnings Per Share ("EPS") - Diluted	0.33			0.22
Adjusted EPS (Non-GAAP measure*)	0.44			0.36
Adjusted EBITDAP (Non-GAAP measure*)	69.3			58.5
Adjusted EBITDAP (Non-GAAP measure*) as a percentage of net sales	13.6		%	11.8		%
Cash used in operating activities	(75.0)			(69.4)
Free cash flow (Non-GAAP measure*)	(77.2)			(73.2)

_________

* We provide Non-GAAP measures as a supplement to financial results presented in accordance with GAAP. A reconciliation of the Non-GAAP measures to the most directly comparable GAAP measures is presented later in the Management’s Discussion and Analysis under the heading "Use of Non-GAAP Financial Measures."

Our business outlook is affected by both increasing complexity in the global security environment and continuing worldwide economic pressures, including those resulting from the military conflict between Russia and Ukraine, and continuing

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uncertainties related to the Coronavirus ("COVID-19") pandemic. A significant component of our strategy in this environment is to focus on protecting our employees' health and safety, delivering excellent performance to our customers, driving improvements and efficiencies across our operations, and creating value through the enhancement and expansion of our business.

While we continue to focus on maintaining a healthy and robust workforce, COVID19 and other global economic factors have also impacted the labor market causing more competition among employers, including us, and making it more difficult to find and retain quality employees. We are also periodically subject to our competitors seeking to entice our employees to leave the Company. Ongoing uncertainty surrounding internal governance matters and other recent developments, including the termination of the Merger Agreement with Lockheed Martin, have also impacted our ability to retain qualified employees at various levels within the Company.

Some of the significant challenges we face are as follows: uncertainty associated with our dependence upon U.S. government programs and contracts, future reductions or changes in U.S. government spending in our markets, environmental matters, capital structure, underfunded pension plan, cyber security and other security threats, and the COVID-19 pandemic and the actions taken by governments.

Major Customers

The principal end user customers of our products and technology are primarily agencies of the U.S. government. Since a majority of our sales are, directly or indirectly, to the U.S. government, funding for the purchase of our products and services generally follows trends in U.S. aerospace and defense spending. However, individual U.S. government agencies, which include the military services, NASA, the Missile Defense Agency, and the prime contractors that serve these agencies, exercise independent purchasing power within "budget top-line" limits. Therefore, sales to the U.S. government are not regarded as sales to one customer, but rather each contracting agency is viewed as a separate customer.

The following table summarizes end user net sales to the U.S. government and its agencies, including net sales to significant customers disclosed below:

	Three months ended March 31,
	2022		2021
U.S. government	95	%	97	%
Non U.S. government	5		3

The following table summarizes the percentages of net sales for significant programs, all of which are included in the U.S. government sales and are comprised of multiple contracts:

	Three months ended March 31,
	2022		2021
RS-25	15	%	22	%
Standard Missile	12		12
Patriot Advanced Capability-3 ("PAC-3")	12		6
Terminal High Altitude Area Defense ("THAAD")	8		9

The following table summarizes customers that represented more than 10% of net sales, each of which involves sales of several product lines and programs:

	Three months ended March 31,
	2022		2021
Lockheed Martin	34	%	27	%
NASA	18		26
Raytheon Technologies Corporation	17		15

Industry Update

Our primary aerospace and defense customers include DoD, NASA, and the prime contractors that supply products to these customers. We rely on U.S. government funding for aerospace and defense and our backlog depends, in large part, on the continued funding by the U.S. government for these programs. With enactment of the 2022 Consolidated Appropriations Act ("Public Law 117-103") on March 15, 2022, DoD and NASA are now funded for the remainder of government fiscal year 2022. In light of the Russian invasion of Ukraine, Public Law 117-103 also included supplemental funding to provide aid to Ukraine. Disruptions to our customer’s facilities or delays in supply chain as a result of COVID-19 could delay or decrease expenditures by U.S. government agencies. Such a decrease in DoD and/or NASA expenditures, the elimination or curtailment of a program in which we are or hope to be involved, or changes in payment patterns of our customers as a result of changes in U.S. government outlays, could have a material adverse effect on our operating results, financial condition, and/or cash flows.

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Environmental Matters

Our current and former business operations are subject to, and affected by, federal, state, and local environmental laws and regulations relating to the discharge, treatment, storage, disposal, investigation, and remediation of certain materials, substances, and wastes. Our policy is to conduct our business with due regard for the preservation and protection of the environment. We periodically assess compliance with these regulations and we believe our current operations are materially in compliance with applicable environmental laws and regulations as of March 31, 2022.

The following table summarizes our recoverable amounts, environmental reserves, and range of liability, as of March 31, 2022:

	Recoverable Amounts (1)		Environmental Reserves		Estimated Range of Liability
	(In millions)
Sacramento	$	189.4	$	215.2	$215.2 - $349.2
Baldwin Park Operable Unit	54.2		61.6		61.6 - 74.3
Other Aerojet Rocketdyne sites	11.7		11.7		11.7 - 21.3
Other sites	0.7		5.2		5.2 - 6.4
Total	$	256.0	$	293.7	$293.7 - $451.2

_____

(1)Excludes the receivable from Northrop Grumman Corporation ("Northrop") of $39.0 million as of March 31, 2022, related to environmental costs already paid (and therefore not reserved) by us in prior years and reimbursable under our agreement with Northrop.

Environmental remediation costs are primarily incurred by our Aerospace and Defense segment, and certain of these costs are recoverable from our contracts with the U.S. government. We currently estimate approximately 12% of our future Aerospace and Defense segment environmental remediation costs will not likely be reimbursable and are expensed.

Capital Structure

We have a substantial amount of debt for which we are required to make interest and principal payments. Interest on long-term financing is not a recoverable cost under our U.S. government contracts. As of March 31, 2022, we had $463.0 million of debt outstanding.

Retirement Benefits

The American Rescue Plan Act of 2021 ("ARPA") that was signed into law on March 11, 2021, provided funding relief to sponsors of defined benefit pension plans. In line with provisions of ARPA, we expect to make cash contributions of approximately $15 million to our tax-qualified defined benefit pension plan in 2022. We generally are able to recover contributions related to our tax-qualified defined benefit pension plan as allowable costs on our U.S. government contracts, but there are differences between when we contribute to our tax-qualified defined benefit pension plan under pension funding rules and when it is recoverable under Cost Accounting Standards ("CAS").

Recent global disruptions, including disruptions caused by the COVID-19 pandemic as well as Russia’s invasion of Ukraine and the global response, have continued to cause significant economic uncertainty and volatility in financial markets which could adversely impact the funded status of our tax-qualified defined benefit pension plan. The funded status of our pension plan is impacted by the investment experience of the plan assets, by any changes in U.S. law, and by changes in the statutory interest rates used by the tax-qualified pension plan in the U.S. to calculate funding requirements. Accordingly, if the performance of our plan assets does not meet our assumptions, if there are changes to the Internal Revenue Service regulations or other applicable law or if other actuarial assumptions are modified, our future contributions to our underfunded pension plan could be higher than we expect.

Cyber Security and Other Security Threats

We routinely defend against various cyber and other security threats against our defenses to protect the confidentiality, integrity and availability of our information technology infrastructure, supply chain, business or customer information and other threats. We are also subject to similar security threats at customer sites that we operate and manage as a contractual requirement.

The threats we face range from attacks common to most industries to more advanced and persistent, highly organized adversaries, insider threats and other threat vectors targeting us and other defense and aerospace companies; because we protect national security information. In addition, cyber threats are evolving, growing in their frequency and include, but are not limited to, malicious software, destructive malware, attempts to gain unauthorized access to data, disruption or denial of service attacks, and other electronic security breaches that could lead to disruptions in mission critical systems, unauthorized release of confidential, personal or otherwise protected information (ours or that of our employees, customers or partners), and corruption of data, networks or systems. We also could be impacted by cyber threats or other disruptions or vulnerabilities found in products we use or in our partners’ or customers’ systems that are used in connection with our business.

Russia’s invasion of Ukraine and the global response to the invasion has exacerbated these cyber and other security threats we face. We continue to assess our information technology systems and are engaged in cooperative efforts with our

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customers, suppliers, and subcontractors to seek to minimize the impact of cyber threats, other security threats or business disruptions.

COVID-19

During the three months ended March 31, 2022, our financial results and operations were not materially adversely impacted by the COVID-19 pandemic. The extent to which the Company’s future financial results could be impacted by the COVID-19 pandemic depends on future developments that are highly uncertain and cannot be predicted at this time. We are not aware of any specific event or circumstance that would require an update to its estimates or judgments or a revision of the carrying value of its assets or liabilities as of the date of issuance of this Quarterly Report on Form 10-Q. These estimates may change, as new events occur and additional information is obtained. Actual results could differ materially from these estimates under different assumptions or conditions.

The CARES Act was enacted on March 27, 2020, in response to the COVID-19 pandemic and the negative impacts that it has had on the global economy and U.S. companies. The CARES Act includes various financial measures to assist companies, including temporary changes to income and non-income-based tax laws. Through these provisions, as of March 31, 2022, we have delayed $10.7 million of payroll tax payments that otherwise would have been paid. Additionally, in accordance with the provisions of the CARES Act, we accelerated depreciation on qualified improvement property placed in service after December 31, 2017 for income tax purposes.

Proxy Contest

As disclosed in Note 8(a) in the Notes to Unaudited Condensed Consolidated Financial Statements in Part I, Item 1 of this Quarterly Report, there is an ongoing proxy contest and associated litigation involving members of our board of directors. In accordance with orders entered by the Court of Chancery on February 23 and March 22, 2022, the Company has retained neutral counsel with respect to the Company’s Annual Meeting, ongoing proxy contest and associated litigation. As of May 2, 2022, the date of the Annual Meeting and associated record date have not been set.

Results of Operations

Net Sales

	Three months ended March 31,
	2022		2021		Change*
	(In millions)
Net sales	$	511.1	$	496.1	$	15.0

* Primary reason for change. The increase in net sales was primarily driven by the PAC-3 and Next Generation Interceptor ("NGI") programs partially offset by a decline on the RS-25 program.

Cost of Sales (exclusive of items shown separately below)

	Three months ended March 31,
	2022			2021			Change*
	(In millions, except percentage amounts)
Cost of sales (exclusive of items shown separately below)	$	425.5		$	418.0		$	7.5
Percentage of net sales	83.3		%	84.3		%

* Primary reason for change. The decrease in cost of sales as a percentage of net sales was primarily driven by improved performance on the Standard Missile program.

Selling, General and Administrative Expense ("SG&A")

	Three months ended March 31,
	2022			2021			Change*
	(In millions, except percentage amounts)
Components of SG&A:
SG&A excluding stock-based compensation	$	9.1		$	6.2		$	2.9
Stock-based compensation	(0.9)			2.8			(3.7)
SG&A	$	8.2		$	9.0		$	(0.8)
Percentage of net sales	1.6		%	1.8		%
Percentage of net sales excluding stock-based compensation	1.8		%	1.2		%

* Primary reason for change. The decrease in SG&A expense was primarily driven by lower stock-based compensation partially offset by higher legal costs.

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Depreciation and Amortization

	Three months ended March 31,
	2022		2021		Change*
	(In millions)
Components of depreciation and amortization:
Depreciation	$	12.0	$	11.2	$	0.8
Amortization	1.7		3.3		(1.6)
Accretion	0.7		0.7		—
Depreciation and amortization	$	14.4	$	15.2	$	(0.8)

* Primary reason for change. The decrease in depreciation and amortization expense was primarily due to the completion of amortization expense in the third quarter of 2021 for a significant portion of the customer related intangible assets associated with the acquisition of the Rocketdyne Business from United Technologies Corporation in 2013.

Other Expense, net

	Three months ended March 31,
	2022		2021		Change*
	(In millions)
Other expense, net	$	20.3	$	8.1	$	12.2

* Primary reason for change. The increase in other expense, net was primarily due to $16.1 million of costs associated with legal matters and $3.1 million of costs associated with the proxy contest and associated litigation matter. These costs were partially offset by lower terminated merger costs incurred in the current period. See Note 11 of the Notes to Unaudited Condensed Consolidated Financial Statements for additional information.

Retirement Benefits Expense

	Three months ended March 31,
	2022		2021		Change*
	(In millions)
Components of retirement benefits expense:
Interest cost on benefit obligation	$	9.0	$	8.5	$	0.5
Expected return on assets	(15.7)		(15.3)		(0.4)
Amortization of prior service costs	—		—		—
Amortization of net losses	7.0		15.3		(8.3)
Retirement benefits expense	$	0.3	$	8.5	$	(8.2)

* Primary reason for change. The decrease in retirement benefits expense was primarily due to lower amortization of net actuarial losses as a result of an increase in the discount rate used to calculate benefits obligation at December 31, 2021.

Loss on debt

	Three months ended March 31,
	2022		2021		Change*
	(In millions)
Loss on debt	$	—	$	9.1	$	(9.1)

* Primary reason for change. In the three months ended March 31, 2021, we settled $135.4 million of our 2¼% Notes as a result of receiving conversion notices from the holders of the 2¼% Notes. The principal amount of $135.4 million was settled in cash and the conversion premium was settled in 2.6 million common shares. We incurred a pre-tax charge of $9.1 million in the three months ended March 31, 2021, associated with the settlement of the 2¼% Notes.

Interest Income and Other

	Three months ended March 31,
	2022		2021		Change*
	(In millions)
Interest income and other	$	(0.2)	$	0.6	$	(0.8)

* Primary reason for change. The decrease in interest income and other was primarily due to unrealized losses on marketable securities during the three months ended March 31, 2022 and lower average cash balances.

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Interest Expense

	Three months ended March 31,
	2022		2021		Change*
	(In millions)
Components of interest expense:
Contractual interest and other	$	3.5	$	3.6	$	(0.1)
Amortization of debt discount and deferred financing costs	0.4		1.5		(1.1)
Interest expense	$	3.9	$	5.1	$	(1.2)

*Primary reason for change. The decrease in interest expense was primarily due to the adoption of the new accounting standard that eliminated the amortization of the debt discount effective January 1, 2022 (see Note 1 of the Notes to Unaudited Condensed Consolidated Financial Statements).

Income Taxes

The income tax provision was as follows:

	Three months ended March 31,
	2022		2021
	(In millions)
Income tax provision	$	10.5	$	5.6

In the three months ended March 31, 2022, the income tax provision was $10.5 million for an effective tax rate of 27.4%. Our effective tax rate differed from the 21% statutory federal income tax rate primarily due to state income taxes and certain expenditures which are permanently not deductible for tax purposes, partially offset by the impact of Research and Development ("R&D") credits and original issue discount on convertible debt.

In the three months ended March 31, 2021, the income tax provision was $5.6 million for an effective tax rate of 23.6%. Our effective tax rate differed from the 21% statutory federal income tax rate primarily due to state income taxes and certain expenditures which are permanently not deductible for tax purposes, partially offset by the impact of R&D credits.

Beginning in 2022, the Tax Cuts and Jobs Act of 2017, changed the deductibility rules of research and development expenditures. Accordingly, as of March 31, 2022, the income tax payable balance totaled $42.7 million resulting in a significant increase in the income tax payable balance compared with an income tax receivable position as of December 31, 2021. While it is possible that Congress may modify, defer or repeal this provision before it takes effect, we have no assurance that the provision will be modified, deferred or repealed. If this provision is not modified, deferred or repealed, it may have an adverse effect on our operating results, financial condition, and/or cash flows.

Operating Segment Information

We evaluate our operating segments based on several factors, of which the primary financial measure is segment performance. Segment performance represents net sales less applicable costs, expenses and provisions for unusual items relating to the segment. Excluded from segment performance are: corporate income and expenses, interest expense, interest income, income taxes, and unusual items not related to the segment. We believe that segment performance provides information useful to investors in understanding our operational performance.

Aerospace and Defense Segment

	Three months ended March 31,
	2022			2021			Change*
	(In millions, except percentage amounts)
Net sales	$	510.5		$	495.5		$	15.0
Segment performance	55.2			53.5			1.7
Segment margin	10.8		%	10.8		%

* Primary reason for change. The increase in net sales was primarily driven by the PAC-3 and NGI programs partially offset by a decline on the RS-25 program.

Segment margin was impacted by the following (i) costs associated with legal matters; (ii) lower retirement benefits expense; (iii) improved performance on the Standard Missile program; and (iv) lower costs associated with the terminated merger.

Our contracts are largely categorized as either "fixed-price" (largely used by the U.S. government for production-type contracts) or "cost-reimbursable" (largely used by the U.S. government for development-type contracts). Fixed-price contracts present the risk of unreimbursed cost overruns, potentially resulting in lower than expected contract profits and margins. This risk is generally lower for cost-reimbursable contracts which, as a result, generally have a lower margin. The following table summarizes the percentages of net sales by contract type:

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	Three months ended March 31,
	2022		2021
Fixed-price	56	%	51	%
Cost-reimbursable	44		49

During the three months ended March 31, 2022, we had $2.7 million of net unfavorable changes in contract estimates on operating results before income taxes compared with net unfavorable changes of $2.4 million during the three months ended March 31, 2021.

Real Estate Segment

	Three months ended March 31,
	2022		2021		Change
	(In millions)
Net sales	$	0.6	$	0.6	$	—
Segment performance	(0.1)		(0.3)		0.2

Net sales and segment performance consist primarily of rental property operations.

Backlog

As of March 31, 2022, our total remaining performance obligations, also referred to as backlog, totaled $6.4 billion. We expect to recognize approximately 37%, or $2.4 billion, of the remaining performance obligations as sales over the next twelve months, an additional 26% the following twelve months, and 37% thereafter. A summary of our backlog is as follows:

	March 31, 2022		December 31, 2021
	(In billions)
Funded backlog	$	2.8	$	3.1
Unfunded backlog	3.6		3.7
Total backlog	$	6.4	$	6.8

Total backlog includes both funded backlog (unfilled orders for which funding is authorized, appropriated and contractually obligated by the customer) and unfunded backlog (firm orders for which funding has not been appropriated). Indefinite delivery and quantity contracts and unexercised options are not reported in total backlog. Backlog is subject to funding delays or program restructurings/cancellations which are beyond our control.

Use of Non-GAAP Financial Measures

Adjusted EBITDAP, Adjusted Net Income, and Adjusted EPS

We provide the Non-GAAP financial measures of our performance called Adjusted EBITDAP, Adjusted Net Income, and Adjusted EPS. We use these metrics to measure our operating and total Company performance. We believe that for management and investors to effectively compare core performance from period to period, the metrics should exclude items that are not indicative of, or are unrelated to, results from our ongoing business operations such as retirement benefits (pension and postretirement benefits), significant non-cash expenses, the impacts of financing decisions on earnings, and items incurred outside the ordinary, ongoing and customary course of our business. Accordingly, we define Adjusted EBITDAP as GAAP net income adjusted to exclude interest expense, interest income, income taxes, depreciation and amortization, retirement benefits net of amounts that are recoverable under our U.S. government contracts, and unusual items (see Note 11 in the unaudited condensed consolidated financial statements for additional information). Adjusted Net Income and Adjusted EPS exclude retirement benefits net of amounts that are recoverable under our U.S. government contracts and unusual items which we do not believe are reflective of such ordinary, ongoing and customary activities. Adjusted Net Income and Adjusted EPS do not represent, and should not be considered an alternative to, net income or diluted EPS as determined in accordance with GAAP.

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	Three months ended March 31,
	2022			2021
	(In millions, except per share and percentage amounts)
Net income	$	27.8		$	18.1
Interest expense	3.9			5.1
Interest income and other	0.2			(0.6)
Income tax provision	10.5			5.6
Depreciation and amortization	14.4			15.2
GAAP retirement benefits expense	0.3			8.5
CAS recoverable retirement benefits expense	(9.5)			(10.0)
Unusual items	21.7			16.6
Adjusted EBITDAP	$	69.3		$	58.5
Net income as a percentage of net sales	5.4		%	3.6		%
Adjusted EBITDAP as a percentage of net sales	13.6		%	11.8		%
Net income	$	27.8		$	18.1
GAAP retirement benefits expense	0.3			8.5
CAS recoverable retirement benefits expense	(9.5)			(10.0)
Unusual items	21.7			16.6
Income tax impact of adjustments (1)	(3.4)			(3.9)
Adjusted Net Income	$	36.9		$	29.3
Diluted EPS	$	0.33		$	0.22
Adjustments	0.11			0.14
Adjusted EPS	$	0.44		$	0.36
Diluted weighted average shares, as reported and adjusted	85.8			80.7

________

(1)     The income tax impact is calculated using the federal and state statutory rates in the corresponding period.

Free Cash Flow

We also provide the Non-GAAP financial measure of Free Cash Flow. Free Cash Flow is defined as cash flow from operating activities less capital expenditures. Free Cash Flow should not be considered in isolation as a measure of residual cash flow available for discretionary purposes or as an alternative to cash flows from operations presented in accordance with GAAP. We use Free Cash Flow, both in presenting our results to stakeholders and the investment community, and in our internal evaluation and management of the business. Management believes that this financial measure is useful to investors because it provides supplemental information to assist them in viewing the business using the same tools that management uses to evaluate progress in achieving our goals. The following table summarizes Free Cash Flow:

	Three months ended March 31,
	2022		2021
	(In millions)
Net cash used in operating activities	$	(75.0)	$	(69.4)
Capital expenditures	(2.2)		(3.8)
Free Cash Flow	$	(77.2)	$	(73.2)

Because our method for calculating these Non-GAAP measures may differ from other companies’ methods, the Non-GAAP measures presented above may not be comparable to similarly titled measures reported by other companies. These measures are not recognized in accordance with GAAP, and we do not intend for this information to be considered in isolation or as a substitute for GAAP measures.

Liquidity and Capital Resources

We believe that our existing cash and cash equivalents and availability under the Senior Credit Facility coupled with cash generated from our future operations will provide sufficient funds to meet our operating plan for the next twelve months and the foreseeable future. As of March 31, 2022, we had $610.9 million of cash and cash equivalents as well as $622.2 million of available borrowings under our Senior Credit Facility. However, there are a number of factors that could positively or negatively impact our liquidity position, including:

30

•effects of the termination of the proposed merger with Lockheed Martin;

•the ongoing proxy contest and associated litigation;

•reductions, delays or changes in U.S. government spending;

•cost overruns on the Company's contracts that require the Company to absorb excess costs;

•issuance or repurchase of debt or equity securities;

•potential funding of pension liabilities either voluntarily or as required by law or regulation;

•compliance with covenants and other terms and conditions related to our financing arrangements;

•environmental claims related to the Company's current and former businesses and operations;

•reductions in the amount recoverable from environmental claims;

•changes or clarifications to current tax law; and

•risks and uncertainties detailed in Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2021, as updated in Part II, Item 1A of this Quarterly Report.

Cash and Cash Equivalents and Short Term Investments

Our cash and cash equivalents and marketable securities consist of cash, time deposits, money market funds, and investment grade corporate debt securities. Our investment policy and strategy are focused on preservation of capital and supporting our liquidity requirements. Changes in U.S. interest rates affect the interest earned on our cash and cash equivalents and marketable securities, and the market value of those securities. Our strategy is focused on the preservation of capital and supporting our liquidity requirements that meet high credit quality standards, as specified in our investment policy approved by the Audit Committee of our Board of Directors.

We continually evaluate opportunities to sell additional equity or debt securities, obtain credit facilities, obtain finance and operating lease arrangements, enter into financing obligations, repurchase common stock, pay dividends, or repurchase, refinance, or otherwise restructure our debt for strategic reasons or to further strengthen our financial position.

As of March 31, 2022, our combined balance of cash and cash equivalents and restricted cash decreased by $89.5 million to $613.9 million from a balance of $703.4 million as of December 31, 2021.

The cash used in operating activities in the three months ended March 31, 2022, of $75.0 million was primarily due to an increase in accounts receivable due to the timing of sales and billing during the quarter.

The cash used in investing activities in the three months ended March 31, 2022, of $2.2 million was related to capital expenditures.

Cash used in financing activities in the three months ended March 31, 2022, was $12.3 million primarily resulting from (i) debt cash payments of $7.1 million (see table below), and (ii) $5.2 million of net cash used by our equity plans and dividend payments.

The following table summarizes our debt principal activity:

	December 31, 2021		Cash Payments		March 31, 2022
	(In millions)
Term loan	$	282.2	$	(6.6)	$	275.6
2 1/4% Notes	145.9		—		145.9
Finance leases	43.4		(0.5)		42.9
Total debt activity	$	471.5	$	(7.1)	$	464.4

Senior Credit Facility

The Senior Credit Facility matures on September 20, 2023, and consists of (i) a $650.0 million revolving line of credit (the "Revolver") and (ii) a $350.0 million Term Loan. The Term Loan and any borrowings under the Revolver bear interest at LIBOR plus an applicable margin ranging from 175 to 250 basis points based on our leverage ratio (the "Consolidated Net Leverage Ratio") measured at the end of each quarter. In addition to interest, we must pay certain fees including (i) letter of credit fees ranging from 175 to 250 basis points per annum on the amount of issued but undrawn letters of credit and eurocurrency rate loans and (ii) commitment fees ranging from 30 to 45 basis points per annum on the unused portion of the Revolver. The Term Loan amortized at a rate of 7.5% per annum as of March 31, 2022, and increasing to 10.0% per annum from December 31, 2022, to be paid in equal quarterly installments with any remaining amounts, along with outstanding borrowings under the Revolver, due on the maturity date. The Company was in compliance with its financial and non-financial covenants as of March 31, 2022.

Other Information

There have been no material changes to our known contractual obligations and other obligations as previously reported in our Annual Report on Form 10-K for the year ended December 31, 2021.

As part of our ongoing business, we have not participated in transactions that generate material relationships with unconsolidated entities or financial partnerships, as is defined in rules promulgated by the SEC, such as entities often referred to

31

as structured finance or special purpose entities, which would have been established for the purpose of facilitating off-balance sheet arrangements or other contractually narrow or limited purposes. See Note 8(d) in the Notes to Unaudited Condensed Consolidated Financial Statements for information relating to our off-balance sheet risk.

Critical Accounting Policies and Estimates

Our financial statements have been prepared with GAAP, which require management to make judgments, estimates and assumptions that affect the reported amounts of assets and liabilities, net revenue and expenses, and the disclosure of contingent assets and liabilities. Our estimates are based on historical experience and assumptions that we believe to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities. We believe that the accounting estimates employed and the resulting balances are reasonable; however, actual results may differ from these estimates and such differences may be material. We believe the following critical accounting policies are most affected by our accounting policies and estimates: revenue recognition, retirement benefit plans, environmental remediation costs and recoveries, and income taxes. Except for income taxes, which are not allocated to our operating segments, these areas affect the financial results of our business segments.

A detailed description of our significant accounting policies can be found in our most recent Annual Report on Form 10-K for the year ended December 31, 2021.There have been no material changes to these critical accounting policies.

Recently Adopted and Issued Accounting Pronouncements

See Note 1 of the Notes to Unaudited Condensed Consolidated Financial Statements for information relating to our discussion of the effects of recent adopted and issued accounting pronouncements.

Forward-Looking Statements

Certain information contained in this report should be considered "forward-looking statements" as defined by Section 21E of the Private Securities Litigation Reform Act of 1995. All statements in this report other than historical information may be deemed forward-looking statements. These statements present (without limitation) the expectations, beliefs, plans and objectives of management and future financial performance and assumptions underlying, or judgments concerning, the matters discussed in the statements. The words "believe," "estimate," "anticipate," "project" and "expect," and similar expressions, are generally intended to identify forward-looking statements. Forward-looking statements involve certain risks, estimates, assumptions and uncertainties, including with respect to future sales and activity levels, cash flows, contract performance, the outcome of litigation and contingencies, environmental remediation and anticipated costs of capital. A variety of factors could cause actual results or outcomes to differ materially from those expected and expressed in our forward-looking statements. We caution you that any forward-looking statements made in this report are not guarantees of future performance, events or results, and you should not place undue reliance on these forward-looking statements, which speak only as of the date of this report. We do not intend, and we undertake no obligation, to update any forward-looking information to reflect new information, future events or otherwise, except as required by law. Important risk factors that could cause actual results or outcomes to differ from those expressed in the forward-looking statements are described in the section "Risk Factors" in Item 1A of our Annual Report to the SEC on Form 10-K for the year ended December 31, 2021, and include, but are not limited to, the following:

•    effects of the termination of the proposed merger with Lockheed Martin;

•the ongoing proxy contest and associated litigation;

•    the continuity of the Company's Board of Directors and management and their strategic oversight;

•    reductions, delays or changes in U.S. government spending;

•    cancellation or material modification of one or more significant contracts;

•    failure of the Company's subcontractors or suppliers to perform their contractual obligations;

•    loss of key qualified suppliers of technologies, components, and materials;

•    the release, unplanned ignition, explosion, or improper handling of dangerous materials used in the Company's businesses;

•    risks inherent to the real estate market;

•    the COVID-19 pandemic and its impact on economic and other conditions world-wide, including global spending, sourcing and the business operations of the Company and its customers and suppliers, among others;

•    actions taken by governments, businesses and individuals in response to the COVID-19 pandemic, including mandated vaccinations;

•    cost overruns on the Company's contracts that require the Company to absorb excess costs;

•    failure of the Company's information technology infrastructure, including a successful cyber-attack, accident, unsuccessful outsourcing of certain information technology and cyber security functions, or security breach that could result in disruptions to the Company's operations;

•    changes in economic and other conditions in the Sacramento, California metropolitan area real estate market or changes in interest rates affecting real estate values in that market;

•    the loss of key employees and shortage of available skilled employees to achieve anticipated growth;

•    a strike or other work stoppage or the Company's inability to renew collective bargaining agreements on favorable terms;

•    changes in estimates related to contract accounting;

•    the funded status of the Company's defined benefit pension plan and the Company's obligation to make cash contributions in excess of the amount that the Company can recover in its current period overhead rates;

•    the substantial amount of debt that places significant demands on the Company's cash resources and could limit the Company's ability to borrow additional funds or expand its operations;

32

•    the Company's ability to comply with the financial and other covenants contained in the Company's debt agreements;

•    changes in LIBOR reporting practices or the method by which LIBOR is determined;

•    failure to secure contracts;

•    costs and time commitment related to potential and/or actual acquisition activities may exceed expectations;

•    failure to comply with regulations applicable to contracts with the U.S. government;

•    failure of the Company's information technology infrastructure or failure to perform by the Company's third party service providers;

•    product failures, schedule delays or other problems with existing or new products and systems;

•    the possibility that environmental and other government regulations that impact the Company become more stringent or subject the Company to material liability in excess of its established reserves;

•    environmental claims related to the Company's current and former businesses and operations including the inability to protect or enforce previously executed environmental agreements;

•    reductions in the amount recoverable from environmental claims;

•    significant risk exposures and potential liabilities that are inadequately covered by insurance;

•    limitations associated with our stockholders' ability to obtain a favorable judicial forum for certain disputes due to the Delaware exclusive forum provision in our Certificate of Incorporation;

•    business disruptions to the extent not covered by insurance;

•    changes or clarifications to current tax law or procedural guidance could adversely impact the Company’s tax liabilities and effective tax rate;

•    exposures and uncertainties related to claims and litigation;

•    effects of changes in discount rates and actuarial estimates, actual returns on plan assets, and government regulations on defined benefit pension plans;

•    inability to protect the Company's patents and proprietary rights; and

•    those risks detailed in the Company's reports filed with the SEC.

Item 3. Quantitative and Qualitative Disclosures About Market Risk

There have been no material changes to our disclosures related to certain market risks as reported under Part II, Item 7A, "Quantitative and Qualitative Disclosures About Market Risk," in our Annual Report to the SEC on Form 10-K for the year ended December 31, 2021.

Interest Rate Risk

We are exposed to market risk principally due to changes in interest rates related to our borrowings, cash and cash equivalents, marketable securities, and pension assets and liabilities.

Borrowings

As of March 31, 2022, our debt principal excluding finance lease obligations totaled $421.5 million: $145.9 million, or 35%, was at a fixed rate of 2.25%; and $275.6 million, or 65%, was at a variable rate of 2.21%.

The following table summarizes the estimated fair value and principal amount for outstanding debt obligations excluding finance lease obligations:

	Fair Value				Principal Amount
	March 31, 2022		December 31, 2021		March 31, 2022		December 31, 2021
	(In millions)
Term loan	$	269.8	$	275.8	$	275.6	$	282.2
21/4% Notes	229.9		266.1		145.9		145.9
Total	$	499.7	$	541.9	$	421.5	$	428.1

The fair value of the 2¼% Notes was determined using broker quotes that are based on open markets for our debt securities (Level 2 securities). The fair value of the term loan was estimated based on a third-party model used to derive a relative value price using comparable corporate loans within a similar industry, credit quality, and currency.

Cash and Marketable Securities

We also have exposure to changes in interest rates related to interest earned and market value on our cash and cash equivalents and marketable securities. Our cash and cash equivalents and marketable securities consist of cash, time deposits, money market funds, and investment grade corporate debt securities. Our investment policy and strategy are focused on preservation of capital and supporting our liquidity requirements. Changes in U.S. interest rates affect the interest earned on our cash and cash equivalents and marketable securities, and the market value of those securities.

Pension Assets and Liabilities

Our tax-qualified pension assets and liabilities are subject to interest rate risk. Information concerning our interest rate risk related to our tax-qualified pension assets and liabilities can be found in Part 7, Item 1, Management’s Discussion and Analysis of Financial Condition and Results of Operations under the caption "Critical Accounting Policies and Estimates" in our Annual Report on Form 10-K for the year ended December 31, 2021.

33

Item 4. Controls and Procedures

Evaluation of disclosure controls and procedures

Based on our management’s evaluation (with the participation of our principal executive officer and principal financial officer), as of the end of the period covered by this report, our principal executive officer and principal financial officer have concluded that our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the "Exchange Act")) are effective to ensure that information required to be disclosed by us in reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in SEC rules and forms and is accumulated and communicated to our management, including our principal executive officer and principal financial officer, as appropriate to allow timely decisions regarding required disclosure.

Changes in internal control over financial reporting

There were no changes in internal control over financial reporting that occurred during the most recent quarter that have materially affected, or are reasonably likely to materially affect, the effectiveness of our internal control over financial reporting.

PART II — OTHER INFORMATION

Item 1. Legal Proceedings

See Note 8 of the Notes to Unaudited Condensed Consolidated Financial Statements in Part I, Item 1 of this Report for information related to our legal proceedings.

Item 1A. Risk Factors

Other than as noted below, there have been no material changes from our risk factors as previously reported in our Annual Report on Form 10-K for the year ended December 31, 2021.

The military conflict between Russia and Ukraine, and the global response to it could exacerbate certain risks we face, and could adversely impact our business, financial condition and results of operations.

On February 24, 2022, the Russian Federation commenced a military invasion of Ukraine. Russia’s invasion of Ukraine and the global response, including the imposition of sanctions by the United States and other countries, has exacerbated, and could continue to exacerbate risks facing our business. Due to the nature of our business and because we protect national security information, we face heightened risk of attack by highly organized adversaries, including nation states and hostile foreign governments such as Russia and its allies. The threats we face range from attacks common to most industries to more advanced and persistent, highly organized adversaries, insider threats and other threat vectors targeting us and other defense and aerospace companies, and may include cyber-attacks, security attacks and other targeted maneuvers affecting our properties and operations, including our mission critical systems. Such attacks may also be targeted at our employees, customers or partners. In the event of one or more of these attacks on us, our business, financial condition and results of operations could be materially adversely affected. We may be required to expend significant additional resources to investigate and fortify our security systems even if an attack is not successful. These and other risks are described more fully in our Annual Report on Form 10-K for the year ended December 31, 2021.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

Issuer Purchases of Equity Securities

The table below provides information about shares surrendered to the Company during the three months ended March 31, 2022, to pay employee withholding taxes due upon the vesting of restricted stock.

Period	Total Number of Shares Purchased	Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs	Maximum Number (or Approximate Dollar Value) of Shares that May Yet Be Purchased under the Plans or Programs
January 1, 2022 through January 31, 2022	310	$	46.15	—	—
February 1, 2022 through February 28, 2022	100,043	38.75		—	—
March 1, 2022 through March 31, 2022	—	—		—	—
Total	100,353	$	38.77	—	—

Item 3. Defaults Upon Senior Securities

None.

Item 4. Mine Safety Disclosures

Not applicable.

Item 5. Other Information

None.

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Item 6. Exhibits

		Incorporated herein by reference
Table Item No.	Exhibit Description	Form	File Number	Exhibit	Filing Date	Filed or Furnished herewith
31.1	Certification of Principal Executive Officer pursuant to Rule 13a-14(a) of the Securities Exchange Act of 1934, as amended.					X
31.2	Certification of Principal Financial Officer pursuant to Rule 13a-14(a) of the Securities Exchange Act of 1934, as amended.					X
32.1	Certification of Principal Executive Officer and Principal Financial Officer pursuant to Rule 13a-14(b) under the Securities Exchange Act of 1934 as amended, and 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.					X
101.INS	XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.					X
101.SCH	XBRL Taxonomy Extension Schema Document					X
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document					X
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document					X
101.LAB	XBRL Taxonomy Extension Label Linkbase Document					X
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document					X
104	Cover Page Interactive Data File (included as Exhibit 101) -- the cover page interactive data file does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document					X

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

		Aerojet Rocketdyne Holdings, Inc.
Date:	May 3, 2022	By:	/s/ Eileen P. Drake
			Eileen P. Drake
			Chief Executive Officer and President
			(Principal Executive Officer)
Date:	May 3, 2022	By:	/s/ Daniel L. Boehle
			Daniel L. Boehle
			Vice President and Chief Financial Officer
			(Principal Financial Officer and Principal Accounting Officer)

35

EX-31.1

Exhibit 31.1

CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Eileen P. Drake, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Aerojet Rocketdyne Holdings, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 3, 2022

/s/ Eileen P. Drake

Eileen P. Drake

Chief Executive Officer and President

(Principal Executive Officer)

EX-31.2

Exhibit 31.2

CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Daniel L. Boehle, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Aerojet Rocketdyne Holdings, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 3, 2022

/s/ Daniel L. Boehle

Daniel L. Boehle

Vice President and Chief Financial Officer

(Principal Financial Officer and Principal Accounting Officer)

EX-32.1

Exhibit 32.1

CERTIFICATIONS

PURSUANT TO 18 UNITED STATES CODE §1350

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

The undersigned hereby certifies that to her knowledge the quarterly report on Form 10-Q of Aerojet Rocketdyne Holdings, Inc. for the period ended March 31, 2022 (the "Report"), as filed with the Securities and Exchange Commission on the date hereof, fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company, as of the dates and the periods expressed in the Report.

/s/ Eileen P. Drake

Eileen P. Drake

Chief Executive Officer and President

(Principal Executive Officer)

Date: May 3, 2022

The undersigned hereby certifies that to his knowledge the quarterly report on Form 10-Q of Aerojet Rocketdyne Holdings, Inc. for the period ended March 31, 2022 (the "Report"), as filed with the Securities and Exchange Commission on the date hereof, fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company, as of the dates and the periods expressed in the Report.

/s/ Daniel L. Boehle

Daniel L. Boehle

Vice President and Chief Financial Officer

(Principal Financial Officer and Principal Accounting Officer)

Date: May 3, 2022

XML

Cover - shares	3 Months Ended
	Mar. 31, 2022	Apr. 18, 2022
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2022
Document Transition Report	false
Entity File Number	1-01520
Entity Registrant Name	Aerojet Rocketdyne Holdings, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	34-0244000
Entity Address, Address Line One	222 N. Pacific Coast Highway
Entity Address, Address Line Two	Suite 500
Entity Address, City or Town	El Segundo
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	90245
City Area Code	310
Local Phone Number	252-8100
Title of 12(b) Security	Common stock, $0.10 par value
Trading Symbol	AJRD
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		80,468,304
Amendment Flag	false
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q1
Entity Central Index Key	0000040888
Current Fiscal Year End Date	--12-31

XML

Condensed Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Net sales	$ 511.1	$ 496.1
Operating costs and expenses:
Cost of sales (exclusive of items shown separately below)	425.5	418.0
Selling, general and administrative expense	8.2	9.0
Depreciation and amortization	14.4	15.2
Other expense, net
Legal matters	16.1	0.0
Other	4.2	8.1
Total operating costs and expenses	468.4	450.3
Operating income	42.7	45.8
Non-operating:
Retirement benefits expense	0.3	8.5
Loss on debt	0.0	9.1
Interest income and other	0.2	(0.6)
Interest expense	3.9	5.1
Total non-operating expense, net	4.4	22.1
Income before income taxes	38.3	23.7
Income tax provision	10.5	5.6
Net income	$ 27.8	$ 18.1
Earnings per share of common stock
Basic earnings per share (in dollars per share)	$ 0.34	$ 0.23
Diluted earnings per share (in dollars per share)	$ 0.33	$ 0.22
Weighted average shares of common stock outstanding, basic (in shares)	80.2	77.6
Weighted average shares of common stock outstanding, diluted (in shares)	85.8	80.7
Cash dividends paid per share (in USD per share)	$ 0	$ 5.00

XML

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 27.8	$ 18.1
Other comprehensive income:
Amortization of net actuarial losses and prior service costs, net of income taxes of $1.8 million and $3.8 million	5.2	11.5
Comprehensive income	$ 33.0	$ 29.6

XML

Condensed Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Income taxes	$ 1.8	$ 3.8

XML

Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Current Assets
Cash and cash equivalents	$ 610.9	$ 700.4
Restricted cash	3.0	3.0
Marketable securities	10.1	10.6
Accounts receivable	143.4	60.6
Contract assets	372.0	354.2
Other current assets	93.6	99.5
Total Current Assets	1,233.0	1,228.3
Noncurrent Assets
Right-of-use assets	49.8	52.6
Property, plant and equipment, net	413.3	421.1
Recoverable environmental remediation costs	220.7	226.2
Deferred income taxes	101.5	55.6
Goodwill	161.4	161.4
Intangible assets	33.1	34.9
Other noncurrent assets	236.3	243.3
Total Noncurrent Assets	1,216.1	1,195.1
Total Assets	2,449.1	2,423.4
Current Liabilities
Current portion of long-term debt	177.3	166.7
Accounts payable	115.1	132.2
Reserves for environmental remediation costs	41.2	37.7
Contract liabilities	366.7	366.5
Other current liabilities	213.1	172.7
Total Current Liabilities	913.4	875.8
Noncurrent Liabilities
Long-term debt	285.7	294.6
Reserves for environmental remediation costs	252.5	258.7
Pension benefits	242.9	255.9
Operating lease liabilities	38.8	41.3
Other noncurrent liabilities	165.9	173.8
Total Noncurrent Liabilities	985.8	1,024.3
Total Liabilities	1,899.2	1,900.1
Commitments and contingencies
Stockholders’ Equity
Preferred stock, par value of $1.00; 15.0 million shares authorized; none issued or outstanding	0.0	0.0
Common stock, par value of $0.10; 150.0 million shares authorized; 80.3 million shares outstanding as of March 31, 2022; 80.1 million shares outstanding as of December 31, 2021	8.0	8.0
Other capital	572.7	578.1
Treasury stock at cost, 2.1 million shares as of March 31, 2022 and December 31, 2021	(64.4)	(64.4)
Retained earnings	129.4	102.6
Accumulated other comprehensive loss, net of income taxes	(95.8)	(101.0)
Total Stockholders’ Equity	549.9	523.3
Total Liabilities and Stockholders’ Equity	$ 2,449.1	$ 2,423.4

XML

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares shares in Millions	Mar. 31, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Preference stock, par value (in USD per share)	$ 1.00	$ 1.00
Preference stock, shares authorized (in shares)	15.0	15.0
Preference stock, shares issued (in shares)	0.0	0.0
Preference stock, shares outstanding (in shares)	0.0	0.0
Common stock, par value (in USD per share)	$ 0.10	$ 0.10
Common stock, shares authorized (in shares)	150.0	150.0
Common stock, shares outstanding (in shares)	80.3	80.1
Treasury stock, shares (in shares)	2.1	2.1

XML

Condensed Consolidated Statements of Stockholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Other Capital	Other Capital Cumulative Effect, Period of Adoption, Adjustment	Treasury Stock	Accumulated deficit	Accumulated deficit Cumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Dec. 31, 2020			76.8
Beginning balance at Dec. 31, 2020	$ 220.4		$ 7.7	$ 562.1		$ (64.4)	$ (57.4)		$ (227.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	18.1						18.1
Amortization of net actuarial losses and prior service costs, net of income taxes	11.5								11.5
Adjustment to dividends paid	13.3						13.3
Settlement of debt (in shares)			2.6
Settlement of debt	(3.8)		$ 0.3	(4.1)
Repurchase of shares for withholding taxes and option costs under equity plans	(4.0)			(4.0)
Stock-based compensation and shares issued under equity plans (in shares)			0.2
Stock-based compensation and shares issued under equity plans	8.4			8.4
Ending balance (in shares) at Mar. 31, 2021			79.6
Ending balance at Mar. 31, 2021	263.9		$ 8.0	562.4		(64.4)	(26.0)		(216.1)
Beginning balance (in shares) at Dec. 31, 2020			76.8
Beginning balance at Dec. 31, 2020	220.4		$ 7.7	562.1		(64.4)	(57.4)		(227.6)
Ending balance (in shares) at Dec. 31, 2021			80.1
Ending balance at Dec. 31, 2021	$ 523.3	$ (6.6)	$ 8.0	578.1	$ (5.6)	(64.4)	102.6	$ (1.0)	(101.0)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible Enumeration]	Accounting Standards Update 2020-06 [Member]
Net income	$ 27.8						27.8
Amortization of net actuarial losses and prior service costs, net of income taxes	5.2								5.2
Repurchase of shares for withholding taxes and option costs under equity plans (in shares)			(0.1)
Repurchase of shares for withholding taxes and option costs under equity plans	(4.3)			(4.3)
Stock-based compensation and shares issued under equity plans (in shares)			0.3
Stock-based compensation and shares issued under equity plans	4.5			4.5
Ending balance (in shares) at Mar. 31, 2022			80.3
Ending balance at Mar. 31, 2022	$ 549.9		$ 8.0	$ 572.7		$ (64.4)	$ 129.4		$ (95.8)

XML

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Operating Activities
Net income	$ 27.8	$ 18.1
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	14.4	15.2
Amortization of debt discount and deferred financing costs	0.4	1.5
Stock-based compensation	(0.9)	2.8
Retirement benefits, net	(6.6)	(2.5)
Loss on debt	0.0	9.1
Other, net	0.5	(0.3)
Changes in assets and liabilities:
Accounts receivable	(82.8)	(130.7)
Contract assets	(17.8)	(11.9)
Other current assets	5.9	14.1
Recoverable environmental remediation costs	5.5	3.9
Other noncurrent assets	6.8	2.3
Accounts payable	(19.0)	(27.4)
Contract liabilities	0.2	29.9
Other current liabilities	45.3	14.6
Deferred income taxes	(45.8)	(3.0)
Reserves for environmental remediation costs	(2.7)	(5.3)
Other noncurrent liabilities and other	(6.2)	0.2
Net Cash Used in Operating Activities	(75.0)	(69.4)
Investing Activities
Purchases of marketable securities	0.0	(1.9)
Capital expenditures	(2.2)	(3.8)
Net Cash Used in Investing Activities	(2.2)	(5.7)
Financing Activities
Dividend payments	(1.2)	(428.5)
Debt repayments	(7.1)	(142.4)
Repurchase of shares for withholding taxes and option costs under equity plans	(4.3)	(4.0)
Proceeds from shares issued under equity plans	0.3	4.2
Net Cash Used in Financing Activities	(12.3)	(570.7)
Net Decrease in Cash, Cash Equivalents and Restricted Cash	(89.5)	(645.8)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	703.4	1,152.5
Cash, Cash Equivalents and Restricted Cash at End of Period	613.9	506.7
Supplemental disclosures of cash flow information
Cash paid for interest	$ 2.6	$ 2.7

XML

Basis of Presentation and Nature of Operations

3 Months Ended

Mar. 31, 2022

Accounting Policies [Abstract]

Basis of Presentation and Nature of Operations

Basis of Presentation and Nature of Operations

Aerojet Rocketdyne Holdings, Inc. ("Aerojet Rocketdyne Holdings" or the "Company") has prepared the accompanying unaudited condensed consolidated financial statements, including the accounts of the Company and its 100% owned and majority owned subsidiaries, in accordance with the instructions to Form 10-Q. The December 31, 2021, condensed consolidated balance sheet was derived from audited financial statements, but does not include all of the disclosures required by accounting principles generally accepted in the United States of America ("GAAP"). These interim financial statements should be read in conjunction with the financial statements and accompanying notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2021. Certain reclassifications have been made to financial information for prior years to conform to the current year’s presentation.

The Company believes the accompanying unaudited condensed consolidated financial statements reflect all adjustments, including normal recurring accruals, necessary for a fair statement of its financial position, results of operations, and cash flows for the periods presented. All significant intercompany balances and transactions have been eliminated in consolidation. The preparation of the unaudited condensed consolidated financial statements in conformity with GAAP requires the Company to make estimates and assumptions that affect the amounts reported in the unaudited condensed consolidated financial statements and accompanying notes. Actual results could differ from those estimates. In addition, the operating results for interim periods may not be indicative of the results of operations for a full year.

The Company’s operations are organized into two segments:

Aerospace and Defense — includes the operations of the Company’s wholly-owned subsidiary Aerojet Rocketdyne, Inc. ("Aerojet Rocketdyne"), a leading technology-based designer, developer and manufacturer of aerospace and defense products and systems for the United States ("U.S.") government, including the Department of Defense ("DoD"), the National Aeronautics and Space Administration ("NASA"), and major aerospace and defense prime contractors.

Real Estate — includes the activities of the Company’s wholly-owned subsidiary Easton Development Company, LLC ("Easton") related to the re-zoning, entitlement, sale, and leasing of the Company’s excess real estate assets.

The fiscal year of the Company's subsidiary, Aerojet Rocketdyne, ends on the last Saturday in December.

A detailed description of the Company’s significant accounting policies can be found in the Company’s most recent Annual Report on Form 10-K for the year ended December 31, 2021.

Revision of Previously Issued Consolidated Financial Statements

During the three months ended March 31, 2022, the Company identified an error in its accounting for income taxes associated with its 2.25% Convertible Senior Notes ("2¼% Notes"). Upon issuance of the 2¼% Notes in 2016, the Company did not record the applicable deferred tax liability associated with the conversion option that had been recorded in other capital, which resulted in an overstatement of other capital, an understatement of deferred tax liabilities and an error in income tax expense in subsequent periods. The Company evaluated the errors and concluded that the errors were not material, either individually or in aggregate, to its current or previously issued consolidated financial statements.

To correct the immaterial errors, the Company has revised its previously issued consolidated financial statements as of December 31, 2021 and 2020, and for each of the three years ended December 31, 2021, 2020, and 2019, and its unaudited condensed consolidated financial statements as of and for the quarters and year-to-date periods ended March 31, 2021, June 30, 2021, and September 30, 2021. The revision of the historical consolidated financial statements also includes the correction of an immaterial misclassification in its unaudited condensed consolidated balance sheet as of December 31, 2020.

Accordingly, the accompanying financial statements and relevant footnotes to the unaudited condensed consolidated financial statements in this Quarterly Report on Form 10-Q have been revised to correct for such immaterial errors. See Note 12 for additional information. The Company will present the revision of its previously issued consolidated financial statements as of December 31, 2021, and for the years ended December 31, 2021 and 2020, in connection with the future filing of its 2022 Annual Report on Form 10-K. Additionally, the Company will present the revision of its previously issued condensed consolidated financial statements as of and for the three and six months ended June 30, 2021, and as of and for the three and nine months ended September 30, 2021, in connection with the future filings of its Quarterly Reports on Form 10-Q.

Terminated Merger Agreement

On December 20, 2020, the Company entered into an Agreement and Plan of Merger (the "Merger Agreement") with Lockheed Martin Corporation ("Lockheed Martin") and Mizar Sub, Inc., a wholly-owned subsidiary of Lockheed Martin ("Merger Sub"), pursuant to which each share of common stock of the Company would have been automatically converted into the right to receive cash in an amount equal to $51.00 per share, adjusted from $56.00 following the payment of a one-time cash dividend of $5.00 per share paid in March 2021 (the "Pre-Closing Dividend") and the Company would have become a wholly-owned subsidiary of Lockheed Martin (the "Merger").

On January 25, 2022, the Federal Trade Commission ("FTC") filed a complaint against the Company and Lockheed Martin in the FTC’s administrative court and a complaint in U.S. federal court seeking a preliminary injunction to stop the deal pending an administrative trial (the "FTC Litigation"). On February 13, 2022, Lockheed Martin notified the Company that it had elected to

terminate the Merger Agreement. On February 14, 2022, pursuant to the parties’ joint motion, the administrative complaint and the U.S. federal court complaint were dismissed.

Coronavirus ("COVID-19") Pandemic

During the three months ended March 31, 2022, the Company’s financial results and operations were not materially adversely impacted by the COVID-19 pandemic. The extent to which the Company’s future financial results could be impacted by the COVID-19 pandemic depends on future developments that are highly uncertain and cannot be predicted at this time. The Company is not aware of any specific event or circumstance that would require an update to its estimates or judgments or a revision of the carrying value of its assets or liabilities as of the date of issuance of this Quarterly Report on Form 10-Q. These estimates may change, as new events occur and additional information is obtained. Actual results could differ materially from these estimates under different assumptions or conditions.

Recently Issued Accounting Pronouncements

In August 2020, the Financial Accounting Standards Board issued guidance which simplifies the accounting for convertible instruments. This guidance eliminates certain models that require separate accounting for embedded conversion features, in certain cases. Additionally, among other changes, the guidance eliminates certain of the conditions for equity classification for contracts in an entity’s own equity. The guidance also requires entities to use the if-converted method for all convertible instruments in the diluted earnings per share calculation and include the effect of share settlement for instruments that may be settled in cash or shares, except for certain liability-classified share-based payment awards. The Company adopted the new guidance as of January 1, 2022, using the modified retrospective approach resulting in the following adjustment (i) a decrease of $1.9 million in deferred tax liabilities, (ii) a decrease of $5.6 million in other capital, (iii) a decrease of $1.0 million in retained earnings, and (iv) an increase of $8.5 million in debt.

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Earnings Per Share ("EPS") of Common Stock

3 Months Ended

Mar. 31, 2022

Earnings Per Share [Abstract]

Earnings Per Share (EPS) of Common Stock

Earnings Per Share ("EPS") of Common Stock

The following table reconciles the numerator and denominator used to calculate basic and diluted EPS of common stock:

	Three months ended March 31,
	2022		2021
	(In millions, except per share amounts)
Numerator:
Net income	$	27.8	$	18.1
Income allocated to participating securities	(0.1)		(0.1)
Net income for basic EPS	$	27.7	$	18.0
Interest on 2¼% Notes	0.7		—
Net income for diluted EPS	$	28.4	$	18.0
Denominator:
Basic weighted average shares	80.2		77.6
Effect of:
21/4% Notes	5.6		3.1
Diluted weighted average shares	85.8		80.7
Basic
Basic EPS	$	0.34	$	0.23
Diluted
Diluted EPS	$	0.33	$	0.22

Securities which would have been anti-dilutive are insignificant and are excluded from the computation of diluted earnings per share in all periods presented.

The increase in the dilutive effect of the 2¼% Notes in the three months ended March 31, 2022, is the result of the adoption of new accounting guidance. See Note 1.

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Revenue Recognition

3 Months Ended

Mar. 31, 2022

Revenue from Contract with Customer [Abstract]

Revenue Recognition

Revenue Recognition

In the Company’s Aerospace and Defense segment, the majority of revenue is earned from long-term contracts to design, develop, and manufacture aerospace and defense products for, and provide related services to, the Company’s customers, including the U.S. government and major aerospace and defense prime contractors.

The Company evaluates the contract value and cost estimates for performance obligations at least quarterly and more frequently when circumstances significantly change. Factors considered in estimating the work to be completed include, but are not limited to: labor productivity, the nature and technical complexity of the work to be performed, availability and cost volatility of materials, subcontractor and vendor performance, warranty costs, volume assumptions, anticipated labor agreements, inflationary trends, schedule and performance delays, availability of funding from the customer, and the recoverability of costs incurred outside the original contract included in any estimates to complete. When the Company’s estimate of total costs to be incurred to satisfy a performance obligation exceeds the expected revenue, the Company recognizes the loss immediately. When the Company determines that a change in estimates has an impact on the associated profit of a performance obligation,

the Company records the cumulative positive or negative adjustment to the statement of operations. Changes in estimates and assumptions related to the status of certain long-term contracts may have a material effect on the Company’s operating results. The following table summarizes the impact of the changes in significant contract accounting estimates on the Company’s Aerospace and Defense segment operating results:

	Three months ended March 31,
	2022		2021
	(In millions, except per share amounts)
Net unfavorable effect of the changes in contract estimates on net sales	$	(0.2)	$	(1.9)
Net unfavorable effect of the changes in contract estimates on income before income taxes	(2.7)		(2.4)
Net unfavorable effect of the changes in contract estimates on net income	(2.0)		(1.9)
Net unfavorable effect of the changes in contract estimates on basic and diluted EPS	(0.02)		(0.02)

In the Company’s Aerospace and Defense segment, the timing of revenue recognition, customer invoicing, and collections produces accounts receivable, contract assets, and contract liabilities in the unaudited condensed consolidated balance sheets. The following table summarizes contract assets and liabilities:

	March 31, 2022		December 31, 2021
	(In millions)
Contract assets	$	378.6	$	359.6
Reserve for overhead rate disallowance	(6.6)		(5.4)
Contract assets, net of reserve	372.0		354.2
Contract liabilities	366.7		366.5
Net contract assets (liabilities), net of reserve	$	5.3	$	(12.3)

Net contract assets increased by $17.6 million from December 31, 2021, primarily due to an increase in unbilled receivables. During the three months ended March 31, 2022, the Company recognized sales of $121.8 million that were included in the Company's contract liabilities as of December 31, 2021.

As of March 31, 2022, the Company’s total remaining performance obligations, also referred to as backlog, totaled $6.4 billion. The Company expects to recognize approximately 37%, or $2.4 billion, of the remaining performance obligations as sales over the next twelve months, an additional 26% the following twelve months, and 37% thereafter.

The Company's contracts are largely categorized as either "fixed-price" (largely used by the U.S. government for production-type contracts) or "cost-reimbursable" (largely used by the U.S. government for development-type contracts). Fixed-price contracts present the risk of unreimbursed cost overruns, potentially resulting in lower than expected contract profits and margins. This risk is generally lower for cost-reimbursable contracts which, as a result, generally have a lower margin. The following table summarizes the percentages of net sales by contract type:

	Three months ended March 31,
	2022		2021
Fixed-price	56	%	51	%
Cost-reimbursable	44		49

The principal end user customers are primarily agencies of the U.S. government as illustrated in the following table:

	Three months ended March 31,
	2022		2021
U.S. government	95	%	97	%
Non U.S. government	5		3

The Company's Real Estate segment represented less than 1% of the Company's net sales for the three months ended March 31, 2022 and 2021.

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Stock-Based Compensation

3 Months Ended

Mar. 31, 2022

Share-based Payment Arrangement [Abstract]

Stock-Based Compensation

Stock-Based Compensation

The following table summarizes stock-based compensation by type of award:

	Three months ended March 31,
	2022		2021
	(In millions)
Stock Appreciation Rights	$	(4.9)	$	(1.7)
Restricted stock and restricted stock units, service based	1.4		1.3
Restricted stock and restricted stock units, performance based	2.6		2.9
Employee stock purchase plan	—		0.3
Total stock-based compensation (benefit) expense	$	(0.9)	$	2.8

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Balance Sheet Accounts

3 Months Ended

Mar. 31, 2022

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Balance Sheet Accounts

Balance Sheet Accounts

a. Fair Value of Financial Instruments

Financial instruments are classified using a three-tiered fair value hierarchy, which prioritizes the inputs used in measuring fair value. These tiers include: Level 1, defined as observable inputs such as quoted prices in active markets; Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable; and Level 3, defined as unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions.

			Fair value measurement as of March 31, 2022
	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Other Observable Inputs (Level 2)		Unobservable Inputs (Level 3)
	(In millions)
Money market funds	$	360.5	$	360.5	$	—	$	—
Registered investment companies	1.2		1.2		—		—
Commercial paper	139.9		—		139.9		—
Equity securities	10.1		10.1		—		—
Total	$	511.7	$	371.8	$	139.9	$	—

			Fair value measurement as of December 31, 2021
	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Other Observable Inputs (Level 2)		Unobservable Inputs (Level 3)
	(In millions)
Money market funds	$	388.6	$	388.6	$	—	$	—
Registered investment companies	1.3		1.3		—		—
Commercial paper	35.0		—		35.0		—
Equity securities	10.6		10.6		—		—
Total	$	435.5	$	400.5	$	35.0	$	—

As of March 31, 2022 and December 31, 2021, the total estimated fair value for commercial paper was classified as cash and cash equivalents as the remaining maturity at date of purchase was less than three months.

The carrying amounts of certain of the Company’s financial instruments, including cash and cash equivalents, restricted cash, accounts receivable, accounts payable, accrued compensation, and other accrued liabilities, approximate fair value because of their short maturities.

The following table summarizes the estimated fair value and principal amount for outstanding debt obligations excluding finance lease obligations:

	Fair Value				Principal Amount
	March 31, 2022		December 31, 2021		March 31, 2022		December 31, 2021
	(In millions)
Term loan	$	269.8	$	275.8	$	275.6	$	282.2
21/4% Notes	229.9		266.1		145.9		145.9
Total	$	499.7	$	541.9	$	421.5	$	428.1

The fair value of the 2¼% Notes was determined using broker quotes that are based on open markets for the Company's debt securities (Level 2 securities). The fair value of the term loan was estimated based on a third-party model used to derive a relative value price using comparable corporate loans within a similar industry, credit quality, and currency.

b. Accounts Receivable

	March 31, 2022		December 31, 2021
	(In millions)
Billed receivables under long-term contracts	$	143.2	$	60.3
Other trade receivables	0.2		0.3
Accounts receivable	$	143.4	$	60.6

c. Other Current Assets

	March 31, 2022		December 31, 2021
	(In millions)
Deferred costs recoverable from the U.S. government	$	40.4	$	37.4
Income tax receivable	—		13.8
Inventories	11.1		10.0
Prepaid expenses	15.5		15.3
Other	26.6		23.0
Other current assets	$	93.6	$	99.5

d. Property, Plant and Equipment, net

	March 31, 2022		December 31, 2021
	(In millions)
Land	$	71.1	$	71.1
Buildings and improvements	505.1		503.0
Machinery and equipment, including capitalized software	501.6		499.1
Construction-in-progress	48.8		50.0
	1,126.6		1,123.2
Less: accumulated depreciation	(713.3)		(702.1)
Property, plant and equipment, net	$	413.3	$	421.1

e. Other Noncurrent Assets

	March 31, 2022		December 31, 2021
	(In millions)
Real estate held for entitlement and leasing	$	103.8	$	103.7
Deferred costs recoverable from the U.S. government	62.2		62.1
Receivable from Northrop Grumman Corporation for environmental remediation costs	33.0		34.5
Other	37.3		43.0
Other noncurrent assets	$	236.3	$	243.3

f. Other Current Liabilities

	March 31, 2022		December 31, 2021
	(In millions)
Accrued compensation and employee benefits	$	103.5	$	122.0
Income taxes payable	42.7		—
Other	66.9		50.7
Other current liabilities	$	213.1	$	172.7

As of March 31, 2022, the income tax payable balance totaled $42.7 million. The increase in the income tax payable balance compared with an income tax receivable balance of $13.8 million as of December 31, 2021, is primarily the result of the elimination of the option for the Company to deduct Research and Development ("R&D") expenditures in the current period and requires the Company to capitalize such costs and amortize the costs over five years when incurred in the U.S.

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Income Taxes

3 Months Ended

Mar. 31, 2022

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

	Three months ended March 31,
	2022		2021
	(In millions)
Income tax provision	$	10.5	$	5.6

In the three months ended March 31, 2022, the income tax provision was $10.5 million for an effective tax rate of 27.4%. The Company’s effective tax rate differed from the 21% statutory federal income tax rate primarily due to state income taxes and certain expenditures which are permanently not deductible for tax purposes, partially offset by the impact of R&D credits and original issue discount on convertible debt.

In the three months ended March 31, 2021, the income tax provision was $5.6 million for an effective tax rate of 23.6%. The Company’s effective tax rate differed from the 21% statutory federal income tax rate primarily due to state income taxes and certain expenditures which are permanently not deductible for tax purposes, partially offset by the impact of R&D credits.

A valuation allowance is required when it is more-likely-than-not that all or a portion of deferred tax assets may not be realized. Assessing the need for a valuation allowance requires management to evaluate, on a quarterly basis, all available evidence, both positive and negative. As of March 31, 2022, the Company continues to believe that the weight of the positive evidence outweighed the negative evidence regarding the realization of its net deferred tax assets.

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Long-term Debt

3 Months Ended

Mar. 31, 2022

Debt Disclosure [Abstract]

Long-term Debt

Long-term Debt

	March 31, 2022		December 31, 2021
	(In millions)
Term loan, bearing interest at variable rates (rate of 2.21% as of March 31, 2022), maturing in September 2023	$	275.6	$	282.2
Unamortized deferred financing costs	(0.7)		(0.8)
Total senior debt	274.9		281.4
Convertible senior notes, bearing interest at 2.25% per annum, interest payments due in June and December, maturing in December 2023	145.9		145.9
Unamortized discount and deferred financing costs	(0.7)		(9.4)
Total convertible senior notes	145.2		136.5
Finance leases	42.9		43.4
Total other debt	42.9		43.4
Total debt, net of unamortized discount and deferred financing costs	463.0		461.3
Less: Amounts due within one year	(177.3)		(166.7)
Total long-term debt, net of unamortized discount and deferred financing costs	$	285.7	$	294.6

Senior Credit Facility

The senior secured senior credit facility (the "Senior Credit Facility") matures on September 20, 2023, and consists of (i) a $650.0 million revolving line of credit (the "Revolver") and (ii) a $350.0 million term loan (the "Term Loan").

As of March 31, 2022, the Company had zero borrowings under the Revolver and issued $27.8 million in letters of credit.

The Term Loan and any borrowings under the Revolver bear interest at LIBOR plus an applicable margin ranging from 175 to 250 basis points based on the Company's leverage ratio (the "Consolidated Net Leverage Ratio") measured at the end of each quarter. In addition to interest, the Company must pay certain fees including (i) letter of credit fees ranging from 175 to 250 basis

points per annum on the amount of issued but undrawn letters of credit and eurocurrency rate loans and (ii) commitment fees ranging from 30 to 45 basis points per annum on the unused portion of the Revolver. 

The Term Loan amortized at a rate of 7.5% per annum as of March 31, 2022, and increasing to 10.0% per annum from December 31, 2022, to be paid in equal quarterly installments with any remaining amounts, along with outstanding borrowings under the Revolver, due on the maturity date. Outstanding borrowings under the Revolver and the Term Loan may be voluntarily repaid at any time, in whole or in part, without premium or penalty.

The Senior Credit Facility is secured by a first priority security interest in the Company’s assets, subject to certain customary exceptions, as well as pledges of its equity interests in certain subsidiaries.

The Senior Credit Facility contains financial covenants requiring the Company to (i) maintain an interest coverage ratio (the "Consolidated Interest Coverage Ratio") of not less than 3.00 to 1.00 and (ii) maintain a Consolidated Net Leverage Ratio not to exceed 3.50 to 1.00 provided that the maximum leverage ratio for all periods shall be increased by 0.50 to 1.00 for two consecutive quarters after consummation of a qualified acquisition. 

The Company may generally make certain investments, redeem debt subordinated to the Senior Credit Facility and make certain restricted payments (such as stock repurchases and dividends) if the Company's Consolidated Net Leverage Ratio does not exceed 3.25 to 1.00 pro forma for such transaction. The Company is otherwise subject to customary covenants including limitations on asset sales, incurrence of additional debt, and limitations on certain investments and restricted payments.

The Company was in compliance with its financial and non-financial covenants as of March 31, 2022.

2¼% Convertible Senior Notes

The Company adopted the new accounting guidance for convertible instruments effective January 1, 2022, using the modified retrospective method, with the cumulative effect recognized as of January 1, 2022. The primary impact of the new guidance was removing the requirement for the Company to account for beneficial conversion features and cash conversion features in equity, separately from the 2¼% Notes and requires the Company to use the if-converted method for the 2¼% Notes in the diluted earnings per share calculation. See Notes 1 and 2 for additional information.

On December 14, 2016, the Company issued $300.0 million aggregate principal amount of 2¼% Notes in a private placement to qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended.

Holders may convert their 2¼% Notes at their option from April 1, 2022, through June 30, 2022, because the Company's closing stock price exceeded $33.80 for at least 20 days in the 30 day period prior to March 31, 2022. The Company has a stated intention to cash settle the principal amount of the 2¼% Notes with the conversion premium to be settled in common shares. Accordingly, the net balance of the 2¼% Notes of $145.2 million is classified as a current liability as of March 31, 2022.

As more fully described in the indenture governing the 2¼% Notes, the holders of the 2¼% Notes may surrender all or any portion of their 2¼% Notes for conversion at any time during any calendar quarter, (and only during such calendar quarter), if the last reported sale price of the Company's common stock for at least 20 trading days (whether or not consecutive) during the period of 30 consecutive trading days ending on the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% ($33.80) of the conversion price on each applicable trading day.

The following table summarizes information regarding the 2¼% Notes (in millions, except years, percentages, conversion rate, and conversion price):

	March 31, 2022			December 31, 2021
Remaining amortization period (years)	1.75			2.0
Effective interest rate	2.6		%	5.8		%
Conversion rate (shares of common stock per $1,000 principal amount)	38.4615			38.4615
Conversion price (per share of common stock)	$	26.00		$	26.00

Based on the Company's closing stock price of $39.35 on March 31, 2022, the if-converted value of the 2¼% Notes exceeded the aggregate principal amount of the 2¼% Notes by $74.9 million.

The following table presents the interest expense components for the 2¼% Notes:

	Three months ended March 31,
	2022		2021
	(In millions)
Interest expense-contractual interest	$	0.8	$	0.8
Interest expense-amortization of debt discount (see discussion above)	—		1.1
Interest expense-amortization of deferred financing costs	0.1		0.1

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2022

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

a. Legal Matters

The Company and its subsidiaries are subject to legal proceedings, including litigation in U.S. federal and state courts, which arise out of, and are incidental to, the ordinary course of the Company’s on-going and historical businesses. The Company is also subject from time to time to governmental investigations by federal and state agencies. The Company cannot predict the outcome of such proceedings with any degree of certainty. Loss contingency provisions are recorded for probable losses at management’s best estimate of a loss. When only a range of amounts can be reasonably estimated and no amount within the range is more likely than another, the low end of the range is recorded. These estimates are often initially developed substantially earlier than when the ultimate loss is known, and are refined each quarterly reporting period as additional information becomes available.

Merger-Related FTC Litigation

On January 25, 2022, the U.S. Federal Trade Commission filed a complaint against Lockheed Martin and the Company in the FTC’s administrative court pursuant to Part 3 of the Federal Trade Commission Act. The FTC also filed a complaint in the U.S. District Court for the District of Columbia ("DDC") seeking a Preliminary Injunction to stop the deal pending an administrative trial, which was scheduled to begin on June 16, 2022. The FTC’s administrative complaint alleged that the Merger Agreement constituted an unfair method of competition in violation of Section 5 of the Federal Trade Commission Act and both the administrative complaint and the DDC complaint alleged that the Merger, if consummated, would have substantially lessened competition in relevant markets in violation of Section 7 of the Clayton Act. The administrative complaint sought the following remedies: if the Merger was consummated, divestiture or reconstitution of all associated and necessary assets, in a manner that restores competition in relevant markets; a prohibition against any transaction between the Company and Lockheed Martin that combined the businesses in relevant markets except as approved by the FTC; a requirement that, for a period of time, the Company and Lockheed Martin provide prior notice to the FTC of acquisitions, mergers, consolidations, or any other combinations of their businesses in relevant markets; a requirement to file periodic compliance reports with the FTC; and any other relief appropriate to correct or remedy the anticompetitive effects of the transaction or to restore the Company as a viable, independent competitor in the relevant markets. The Merger Agreement provided that Lockheed Martin could elect to defend against the FTC Litigation within 30 days of the filing of the litigation or terminate the Merger Agreement. On February 13, 2022, Lockheed Martin notified the Company that it had elected to terminate the Merger Agreement. On February 14, 2022, pursuant to the parties’ joint motion, the administrative complaint and DDC complaint were dismissed.

Proxy Contest Litigation

In early 2022, disagreements relating to the election of directors to the Company’s Board at the Company’s 2022 Annual Meeting of Stockholders (the "Annual Meeting") developed among the Company’s directors. The Company’s eight-member Board was evenly divided between Warren G. Lichtenstein, James R. Henderson, Audrey A. McNiff and Martin Turchin (the "LHMT Directors") and Thomas Corcoran, General Kevin P. Chilton USAF (Ret.), Eileen P. Drake and General Lance W. Lord, USAF (Ret.) (the "CCDL Directors"). On January 28, 2022, SPH Group Holdings LLC (SPH), a company affiliated with Mr. Lichtenstein, nominated a slate of seven directors, including the LHMT Directors, for election. The directors then filed two separate lawsuits in the Court of Chancery of the State of Delaware. On February 7, 2022, the LHMT Directors filed C.A. No. 2022-0127-LWW and on February 11, 2022, the CCDL Directors filed C.A. No. 2022-0146-LWW.

The LHMT Complaint

The LHMT Directors filed suit against the CCDL Directors and named the Company as a nominal party to the lawsuit. The LHMT Directors sought, among other things:

•A declaratory judgment that no CCDL Director nor Aerojet officer, director, employee or anyone else acting or purporting to act on the Company’s behalf may speak on behalf of the Company or take any action on behalf of the Company without proper authorization from the Board or a duly authorized committee of the Board under Delaware law;

•A declaratory judgment that, so long as the Board is evenly divided regarding the election at the Annual Meeting, no officer, employee, advisor or agent of the Company shall take action on behalf of the Company for the purpose of directly or indirectly supporting either the LHMT Directors or the CCDL Directors in connection with the election at the Annual Meeting. Instead, so long as the Board is evenly divided in connection with the election, the Company must remain neutral on that subject;

•A declaration that alleged actions purportedly taken by the CCDL Directors on behalf of the Company without proper authorization were unauthorized, invalid and void;

•A permanent injunction prohibiting the CCDL Directors from taking any action or purporting to take any action on behalf of the Company without proper authorization; and

•A permanent injunction specifying that the Company and its officers, employees agents and advisors in their capacity as such shall remain neutral in any electoral dispute between the LHMT Directors and the CCDL Directors.

The LHMT Directors also moved for a temporary restraining order, which the CCDL Directors opposed and which would, among other things, prevent the CCDL Directors and Aerojet’s officers, directors, employees, advisors, and agents, without prior written approval of the Board, from (1) making any public statements or disclosures, on behalf of or in the name of the Company in support of the election efforts of any candidate for election at the Annual Meeting and (2) acting on behalf of or in the name of the Company or using Company resources in support of the election efforts of any candidate for election at the Annual Meeting.

The CCDL Complaint

The CCDL Directors filed suit against the LHMT Directors and SPH, and named the Company as a plaintiff and a nominal defendant in the lawsuit. The LHMT Directors dispute that the CCDL Directors were authorized to name the Company as a plaintiff.

The CCDL Directors sought, among other things:

•The appointment of a special committee of Gen. Chilton, Mr. Corcoran, and Gen. Lord to manage the Company’s response to the alleged proxy contest launched by the LHMT Directors, or, in the alternative, appointment of a custodian pursuant to 8 Del. C. § 226(a)(2);

•A declaration that the LHMT Directors are interested with respect to the alleged proxy contest by virtue of their inclusion in SPH’s nominated slate;

•A declaration that the LHMT Directors breached their fiduciary duties by allegedly engaging in unauthorized communications regarding the Lockheed Martin merger and by allegedly participating in discussions regarding, and voting on, matters in which they are self-interested;

•A declaration that the LHMT Directors breached their fiduciary duties by allegedly failing to disclose material information about Mr. Lichtenstein’s alleged machinations to take control of Aerojet in their filing with the Securities and Exchange Commission regarding SPH’s nomination of directors and a declaration that the notice on that topic had violated the Company’s advance-notice bylaw for the same reason; and

•The removal of Mr. Lichtenstein as a director as a consequence for alleged breaches of his fiduciary duty of loyalty, pursuant to 8 Del. C. § 225(c).

Consolidation and Development of the LHMT and CCDL Actions

At a hearing on February 15, 2022, the Court of Chancery granted the LHMT Plaintiffs’ motion for a temporary restraining order and ordered the parties to submit a proposed form of order reflecting the Court’s instructions issued during the hearing. The Court also noted the parties’ agreement to consolidate the two separately filed cases, and ordered the parties to submit a proposed order.

On February 23, 2022, the Court of Chancery entered a temporary restraining order that provided, among other things, that:

•No party to this Action, no officer, director, employee, advisor or agent of the Company, no person or entity purporting to have authority over the Company, and no person or entity acting in concert with any of the foregoing who has notice of this order, shall, absent prior written Board approval (i) make any public statement, issue any press release or make any disclosure on behalf of or in the name of the Company in support of the election efforts of any candidate for election at the Company’s 2022 Annual Meeting, or (ii) take action on behalf of or in the name of the Company or use or otherwise deploy Company funds or other Company resources in support of the election efforts of any candidate for election at the Annual Meeting.

•The Company shall retain independent counsel agreed upon and authorized by at least 5 members of the Board in connection with the two actions filed by the directors.

On February 25, 2022, the Court of Chancery entered an order consolidating the foregoing actions into one action captioned In Re Aerojet Rocketdyne Holdings, Inc., (Consolidated C.A. No. 2022-0127-LWW), and setting a trial date for the combined actions of May 23-25, 2022.

On March 1, 2022, the CCDL Directors nominated a slate of directors for election to the Company’s board.

On March 7, 2022, the CCDL Directors dismissed without prejudice the claims they had asserted in the CCDL Complaint. The claims that were purportedly asserted by the Company in the CCDL Complaint remain pending as of March 31, 2022.

On March 22, 2022, the Court of Chancery held a hearing on the CCDL Directors’ motion for entry of a final order and judgment and the LHMT Directors’ motions for leave to supplement their complaint and to enforce the Court’s temporary restraining order. The Court denied the CCDL Directors’ motion and granted the LHMT Directors’ motions, ordering that neutral counsel to represent the Company in this action shall be retained, by the agreement of at least 5 members of the Company’s Board, within seven days of this Order. The Company has since retained neutral counsel in accordance with the Court’s orders.

Asbestos Litigation

The Company has been, and continues to be, named as a defendant in lawsuits alleging personal injury or death and seeking various monetary damages due to exposure to asbestos in building materials, products, or in manufacturing operations. The majority of cases are pending in Illinois state courts. There were 133 asbestos cases pending as of March 31, 2022.

Given the lack of any significant consistency to claims (i.e., as to product, operational site, or other relevant assertions) filed against the Company, the Company is generally unable to make a reasonable estimate of the future costs of pending claims or unasserted claims. The aggregate settlement costs and legal and administrative fees associated with the Company’s asbestos litigation has been immaterial for the last three years. As of March 31, 2022, the Company has accrued an immaterial amount related to pending claims.

United States ex. rel. Markus vs. Aerojet Rocketdyne Holdings

In the case captioned United States ex. rel. Markus vs. Aerojet Rocketdyne Holdings, Inc. et al., Case No. 2:15-CV-02245- WBS-AC, the Department of Justice completed its review of the case and declined to intervene in June 2018. The case was originally filed under seal in the U.S. District Court, Eastern District of California in September 2017 and alleged causes of action against the Company based on false claims, retaliation, and wrongful termination of employment seeking injunctive relief, civil penalties, and compensatory and punitive damages. In February 2019, the Company filed a Motion to Dismiss the False Claims Act ("FCA") counts of the complaint and a Motion to Compel Arbitration on the employment based claims. In May 2019, the court dismissed one count of the FCA claim, denied the motion to dismiss the remaining FCA counts, and moved the employment based claims to arbitration. In September 2021, each party filed a motion for summary judgment. In February 2022, the Court denied Relator’s motion for summary judgment in full and granted the Company’s motion for summary judgment in part. Specifically, the Court rejected Relator’s false certification allegations in their entirety while also significantly diminishing the number of U.S. government contracts at issue in the litigation, which number excludes both the majority of contracts specified in Relator’s Second Amended Complaint ("SAC") as well as numerous contracts regarding which Relator purported to make claims but that were not specified in the SAC. The Court found disputed issues of material fact with regard to the remaining contracts. Trial in this matter commenced on April 26, 2022. On April 27, 2022, the Company agreed to a settlement in principle as to Relator’s remaining FCA claims in the amount of $9.0 million, as well as an attorney’s fee award of $3.0 million. The settlement is subject to final approval by the U.S. Department of Justice.

City of Wabash, Indiana v. Aerojet Rocketdyne Holdings

On November 15, 2021, a lawsuit entitled City of Wabash, Indiana v. Aerojet Rocketdyne Holdings, Inc., Case No. 3:21-cv-878 was filed in the United States District Court for the Northern District of Indiana against the Company alleging causes of action under the Comprehensive Environmental Response Compensation and Liability Act and the Indiana Environmental Legal Action Statute and seeking damages, reasonable attorneys’ fees and costs. The action was served on the Company on January 11, 2022. The Company will vigorously contest the complaint’s allegations and has not recorded any liability for this matter as of March 31, 2022.

b. Environmental Matters

The Company is involved in approximately 40 environmental matters under the Comprehensive Environmental Response Compensation and Liability Act, the Resource Conservation Recovery Act, and other federal, state, and local laws relating to soil and groundwater contamination, hazardous waste management activities, and other environmental matters at some of its current and former facilities. The Company is also involved in a number of remedial activities at third party sites, not owned by the Company, where it is designated a potentially responsible party ("PRP") by either the U.S. Environmental Protection Agency ("EPA") and/or a state agency. In many of these matters, the Company is involved with other PRPs. In some instances, the Company’s liability and proportionate share of costs have not been determined largely due to uncertainties as to the nature and extent of site conditions and the Company’s involvement. While government agencies frequently claim PRPs are jointly and severally liable at such sites, in the Company’s experience, interim and final allocations of liability and costs are generally made based on relative contributions of waste or contamination. Anticipated costs associated with environmental remediation that are probable and estimable are accrued. In cases where a date to complete remedial activities at a particular site cannot be determined by reference to agreements or otherwise, the Company projects costs over an appropriate time period not exceeding 15 years. In such cases, generally the Company does not have the ability to reasonably estimate environmental remediation costs that are beyond this period. Factors that could result in changes to the Company’s estimates include completion of current and future soil and groundwater investigations, new claims, future agency demands, discovery of more or less contamination than expected, discovery of new contaminants, modification of planned remedial actions, changes in estimated time required to remediate, new technologies, and changes in laws and regulations.

As of March 31, 2022, the aggregate range of these anticipated environmental costs was $293.7 million to $451.2 million and the accrued amount was $293.7 million. See Note 8(c) for a summary of the environmental reserve activity. Of these accrued liabilities, approximately 98% relates to the Company’s U.S. government contracting business, and a portion of this liability is recoverable. The significant environmental sites are discussed below. The balance of the accrued liabilities, which are not recoverable from the U.S. government, relate to other sites for which the Company’s obligations are probable and estimable.

Sacramento, California Site

In 1989, a federal district court in California approved a Partial Consent Decree ("PCD") requiring Aerojet Rocketdyne, among other things, to conduct a Remedial Investigation and Feasibility Study to determine the nature and extent of impacts due to the release of chemicals from the Sacramento, California site, monitor the American River and offsite public water supply wells, operate Groundwater Extraction and Treatment facilities that collect groundwater at the site perimeter, and pay certain government oversight costs. The primary chemicals of concern for both on-site and off-site groundwater are trichloroethylene, perchlorate, and n-nitrosodimethylamine. A 2002 PCD revision (a) separated the Sacramento site into multiple operable units to allow quicker implementation of remedies for critical areas; (b) required the Company to guarantee up to $75 million (in addition to a prior $20 million guarantee) to assure that Aerojet Rocketdyne’s Sacramento remediation activities are fully funded; and (c) removed approximately 2,600 acres of non-contaminated land from the EPA superfund designation. Obligations under the $75 million aggregate guarantee are limited to $10 million in any year. Both the $75 million aggregate guarantee and the $10 million annual limitation are subject to adjustment annually for inflation.

Aerojet Rocketdyne is involved in various stages of soil and groundwater investigation, remedy selection, design, construction, operation and maintenance associated with the operable units, all of which are conducted under the direction and oversight of the EPA, including unilateral administrative orders, and the California Department of Toxic Substances Control ("DTSC") and Regional Water Quality Control Board, Central Valley Region ("RWQCB"). On September 22, 2016, the EPA

completed its first five-year remedy review of the Sacramento superfund site. The five-year review required by statute and regulation applies to all remedial actions which result in hazardous substances above levels that allow unlimited use and unrestricted exposure. The Company worked with the EPA to address and remedy the findings of the 2016 five-year remedy review. On September 15, 2021, the EPA issued its second five-year remedy review and concluded that the remedies are functioning as intended for the soil and groundwater contamination and that the vapor intrusion investigation and mitigation activities are protective against vapor intrusion risks. The Company is working with the EPA, DTSC, and RWQCB on the implementation of required onsite land use restrictions.

The entire southern portion of the site known as Rio Del Oro was under state orders issued in the 1990s from DTSC and the RWQCB to investigate and remediate soil and groundwater contamination. In 2008, the DTSC released all but approximately 400 acres of the Rio Del Oro property from DTSC’s environmental orders regarding soil contamination although the property remains subject to the RWQCB’s orders to investigate and remediate groundwater environmental contamination emanating offsite from the property.

As of March 31, 2022, the estimated range of anticipated costs discussed above for the Sacramento, California site was $215.2 million to $349.2 million and the accrued amount was $215.2 million included as a component of the Company’s environmental reserves. Expenditures associated with this matter are partially recoverable. See Note 8(c) for further discussion on recoverability.

Baldwin Park Operable Unit ("BPOU")

As a result of its former Azusa, California operations, in 1994, Aerojet Rocketdyne was named a PRP by the EPA in the area of the San Gabriel Valley Basin superfund site known as the BPOU. In 2002, Aerojet Rocketdyne, along with seven other PRPs (the "Cooperating Respondents") signed a project agreement with the San Gabriel Basin Water Quality Authority, the Main San Gabriel Basin Watermaster, and five water companies. The 2002 project agreement terminated in 2017 and the parties executed a project agreement which became operational on May 9, 2017. The agreement has a ten-year term and requires the Cooperating Respondents to fund through an escrow account the ongoing operation, maintenance, and administrative costs of certain treatment and water distribution facilities owned and operated by the water companies. There are also provisions in the project agreement for maintaining financial assurance.

Pursuant to the 2017 agreement with the remaining Cooperating Respondents, Aerojet Rocketdyne's current share of future BPOU costs will be approximately 74%.

As part of Aerojet Rocketdyne’s sale of its Electronics and Information Systems ("EIS") business to Northrop Grumman Corporation ("Northrop") in October 2001, the EPA approved a prospective purchaser agreement with Northrop to absolve it of a pre-closing liability for contamination caused by the Azusa, California operations, which liability remains with Aerojet Rocketdyne. As part of that agreement, the Company agreed to provide a $25 million guarantee of its obligations under the project agreement.

As of March 31, 2022, the estimated range of anticipated costs was $61.6 million to $74.3 million and the accrued amount was $61.6 million included as a component of the Company’s environmental reserves. Expenditures associated with this matter are partially recoverable. See Note 8(c) for further discussion on recoverability.

c. Environmental Reserves and Estimated Recoveries

Environmental Reserves

The Company reviews on a quarterly basis estimated future remediation costs and has an established practice of estimating environmental remediation costs over a fifteen year period, except for those environmental remediation costs with a specific contractual term. Environmental liabilities at the BPOU site are currently estimated through the term of the project agreement, which expires in May 2027. As the period for which estimated environmental remediation costs lengthens, the reliability of such estimates decreases. These estimates consider the investigative work and analysis of engineers, outside environmental consultants, and the advice of legal staff regarding the status and anticipated results of various administrative and legal proceedings. In most cases, only a range of reasonably possible costs can be estimated. In establishing the Company’s reserves, the most probable estimate is used when determinable; otherwise, the minimum amount is used when no single amount in the range is more probable. Accordingly, such estimates can change as the Company periodically evaluates and revises these estimates as new information becomes available. The Company cannot predict whether new information gained as projects progress will affect the estimated liability accrued. The timing of payment for estimated future environmental costs is influenced by a number of factors, such as the regulatory approval process and the time required designing, constructing, and implementing the remedy.

The following table summarizes the Company’s environmental reserve activity:

	Aerojet Rocketdyne- Sacramento		Aerojet Rocketdyne- BPOU		Other Aerojet Rocketdyne Sites		Total Aerojet Rocketdyne		Other		Total Environmental Reserve
	(In millions)
December 31, 2021	$	214.7	$	64.7	$	11.8	$	291.2	$	5.2	$	296.4
Additions/Adjustments	3.8		(0.4)		0.2		3.6		—		3.6
Expenditures	(3.3)		(2.7)		(0.3)		(6.3)		—		(6.3)
March 31, 2022	$	215.2	$	61.6	$	11.7	$	288.5	$	5.2	$	293.7

The effect of the final resolution of environmental matters and the Company’s obligations for environmental remediation and compliance cannot be accurately predicted due to the uncertainty concerning both the amount and timing of future expenditures and due to regulatory or technological changes. The Company continues its efforts to mitigate past and future costs through pursuit of claims for recoveries from insurance coverage and other PRPs and continued investigation of new and more cost effective remediation alternatives and associated technologies.

Estimated Recoveries

On January 12, 1999, Aerojet Rocketdyne and the U.S. government reached a settlement agreement ("Global Settlement") covering environmental costs associated with the Company's Sacramento site and its former Azusa site. Pursuant to the Global Settlement, the Company can recover 88% of its environmental remediation costs through the establishment of prices for Aerojet Rocketdyne's products and services sold to the U.S. government. Additionally, in conjunction with the sale of the EIS business in 2001, Aerojet Rocketdyne entered into an agreement with Northrop (the "Northrop Agreement") whereby Aerojet Rocketdyne is reimbursed by Northrop for a portion of environmental expenditures eligible for recovery under the Global Settlement, subject to an annual billing limitation of $6.0 million and a cumulative limitation of $189.7 million which was reached in June 2017. The following table summarizes the Northrop Agreement activity (in millions):

Total reimbursable costs under the Northrop Agreement	$	189.7
Amount reimbursed to the Company through March 31, 2022	(150.7)
Receivable from Northrop included in the unaudited balance sheet at March 31, 2022	$	39.0

Environmental remediation costs are primarily incurred by the Company's Aerospace and Defense segment, and certain of these costs are recoverable from the Company's contracts with the U.S. government. The Company currently estimates approximately 12% of its future Aerospace and Defense segment environmental remediation costs will not likely be reimbursable and are expensed. Allowable environmental remediation costs are charged to the Company’s contracts with the U.S. government as the costs are incurred. Because these costs are recovered through forward-pricing arrangements, the ability of Aerojet Rocketdyne to continue recovering these costs from the U.S. government depends on Aerojet Rocketdyne’s sustained business volume from U.S. government contracts and programs.

While the Company continues to seek an arrangement with the U.S. government to recover environmental expenditures in excess of the reimbursement ceiling identified in the Global Settlement, there can be no assurances that such a recovery will be obtained, or if not obtained, that such unreimbursed environmental expenditures will not have a materially adverse effect on the Company’s operating results, financial condition, and/or cash flows.

Environmental reserves and estimated recoveries impact to unaudited condensed consolidated statements of operations

The following table summarizes the financial information for the impact of environmental reserves and recoveries to the unaudited condensed consolidated statements of operations:

	Three months ended March 31,
	2022		2021
	(In millions)
Expense to unaudited condensed consolidated statements of operations	$	0.4	$	0.5

d. Arrangements with Off-Balance Sheet Risk

As of March 31, 2022, arrangements with off-balance sheet risk consisted of:

•$27.8 million in outstanding commercial letters of credit, the majority of which may be renewed, primarily to collateralize obligations for environmental remediation and insurance coverage.

•$56.6 million in outstanding surety bonds to primarily satisfy indemnification obligations for environmental remediation coverage

•$120.0 million aggregate in guarantees by the Company of Aerojet Rocketdyne’s obligations to U.S. government agencies for environmental remediation activities.

•Guarantees, jointly and severally, by the Company’s material domestic subsidiaries of their obligations under the Senior Credit Facility.

In addition to the items discussed above, the Company has and will from time to time enter into certain types of contracts that require the Company to indemnify parties against potential third-party and other claims. These contracts primarily relate to: (i) divestiture agreements, under which the Company may provide customary indemnification to purchasers of its businesses or assets including, for example, claims arising from the operation of the businesses prior to disposition, and liability to investigate and remediate environmental contamination existing prior to disposition; (ii) certain real estate leases, under which the Company may be required to indemnify property owners for claims arising from the use of the applicable premises; and (iii) certain agreements with officers and directors, under which the Company may be required to indemnify such persons for liabilities arising out of their relationship with the Company. The terms of such obligations vary. Generally, a maximum obligation is not explicitly stated.

Additionally, the Company has open purchase orders and other commitments to suppliers, subcontractors, and other outsourcing partners for equipment, materials, and supplies in the normal course of business. These amounts are based on volumes consistent with anticipated requirements to fulfill purchase orders or contracts for product deliveries received, or expected to be received, from customers. A substantial portion of these amounts are recoverable through the Company's contracts with the U.S. government.

The Company provides product warranties in conjunction with certain product sales. The majority of the Company’s warranties are a one-year standard warranty for parts, workmanship, and compliance with specifications. On occasion, the Company has made commitments beyond the standard warranty obligation. While the Company has contracts with warranty provisions, there is not a history of any significant warranty claims experience. A reserve for warranty exposure is made on a product by product basis when it is both estimable and probable. These costs are included in the program’s estimate at completion and are expensed in accordance with the Company’s revenue recognition methodology as allowed under GAAP for that particular contract.

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Retirement Benefits

3 Months Ended

Mar. 31, 2022

Retirement Benefits [Abstract]

Retirement Benefits

Retirement Benefits

The following table presents the components of retirement benefits expense (income): 

	Pension Benefits				Postretirement Medical and Life Insurance Benefits
	Three months ended March 31,
	2022		2021		2022		2021
	(In millions)
Interest cost on benefit obligation	$	8.9	$	8.4	$	0.1	$	0.1
Expected return on assets	(15.7)		(15.3)		—		—
Amortization of net losses (gains)	7.7		15.9		(0.7)		(0.6)
Retirement benefits expense (income)	$	0.9	$	9.0	$	(0.6)	$	(0.5)

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Operating Segments and Related Disclosures

3 Months Ended

Mar. 31, 2022

Segment Reporting [Abstract]

Operating Segments and Related Disclosures

Operating Segments and Related Disclosures

The Company’s operations are organized into two operating segments based on different products and customer bases: Aerospace and Defense, and Real Estate. The following table presents selected financial information for each reportable segment:

	Three months ended March 31,
	2022		2021
	(In millions)
Net Sales:
Aerospace and Defense	$	510.5	$	495.5
Real Estate	0.6		0.6
Total Net Sales	$	511.1	$	496.1
Segment Performance:
Aerospace and Defense	$	62.7	$	52.4
Environmental remediation provision adjustments	(0.4)		(0.4)
GAAP/Cost Accounting Standards retirement benefits expense difference	9.2		3.2
Unusual items (see Note 11)	(16.3)		(1.7)
Aerospace and Defense Total	55.2		53.5
Real Estate	(0.1)		(0.3)
Total Segment Performance	$	55.1	$	53.2
Reconciliation of segment performance to income before income taxes:
Segment performance	$	55.1	$	53.2
Interest expense	(3.9)		(5.1)
Interest income and other	(0.2)		0.6
Stock-based compensation	0.9		(2.8)
Corporate retirement benefits	—		(1.7)
Corporate and other	(8.2)		(5.6)
Unusual items (see Note 11)	(5.4)		(14.9)
Income before income taxes	$	38.3	$	23.7

The following table summarizes customers that represented more than 10% of net sales:

	Three months ended March 31,
	2022		2021
Lockheed Martin	34	%	27	%
NASA	18		26
Raytheon Technologies Corporation	17		15

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Unusual Items

3 Months Ended

Mar. 31, 2022

Unusual or Infrequent Items, or Both [Abstract]

Unusual Items

Unusual Items

The following table presents total unusual items in the unaudited condensed consolidated statements of operations:

	Three months ended March 31,
	2022		2021
	(In millions)
Unusual items
Legal matters (component of other expense, net)	$	16.1	$	—
Proxy contest and related litigation costs (component of other expense, net)	3.1		—
Terminated merger costs (component of other expense, net)	2.5		7.5
Loss on debt	—		9.1
	$	21.7	$	16.6

In the three months ended March 31, 2022, the Company incurred $16.1 million associated with legal matters. See Note 8(a) for additional information.

In the three months ended March 31, 2022, the Company incurred $3.1 million of costs associated with the proxy contest and related litigation costs. See Note 8(a) for additional information.

In the three months ended March 31, 2022 and 2021, the Company incurred terminated merger costs of $2.5 million and $7.5 million, respectively. See Note 1 for additional information. The components of the terminated merger costs are as follows (in millions):

	Three months ended March 31,
	2022		2021
	(In millions)
Legal	$	1.8	$	4.6
Employee compensation	0.3		2.1
Consulting and other professional costs	0.4		0.8
	$	2.5	$	7.5

In the three months ended March 31, 2021, the Company settled $135.4 million of its 2¼% Notes as a result of receiving conversion notices from the holders of the 2¼% Notes. The principal amount of $135.4 million was settled in cash and the conversion premium was settled in 2.6 million common shares. The Company incurred a pre-tax charge of $9.1 million in the three months ended March 31, 2021, associated with the settlement of the 2¼% Notes.

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Revision of Previously Issued Financial Statements

3 Months Ended

Mar. 31, 2022

Accounting Changes and Error Corrections [Abstract]

Revision of Previously Issued Financial Statements

Revision of Previously Issued Financial Statements

As disclosed in Note 1, during the three months ended March 31, 2022, the Company identified an immaterial error in its accounting for income taxes associated with its 2¼% Notes. Upon issuance of the 2¼% Notes in 2016, the Company did not record the applicable deferred tax liability associated with the conversion option that had been recorded in other capital, which resulted in an overstatement of other capital, an overstatement of deferred income taxes, an overstatement of other current assets, net and an error in income tax expense in subsequent periods. The Company evaluated the errors and concluded that the errors were not material, either individually or in aggregate, to its current or previously issued consolidated financial statements.

Due to the immaterial error related to the accounting for income taxes associated with the 2¼% Notes, the opening other capital balance as of January 1, 2019, 2020, and 2021 was overstated by $20.9 million. Additionally, the opening retained earnings balance as of January 1, 2019 and 2020, was understated by $7.9 million and $8.0 million, respectively, and the opening accumulated deficit as of January 1, 2021, was overstated by $7.8 million. During 2021 income tax expense was overstated by $2.9 million resulting in a cumulative understatement of retained earnings of $10.7 million as of December 31, 2021.

There were no changes to the unaudited condensed consolidated statement of operations and condensed consolidated statement of comprehensive income for the three months ended March 31, 2021. The revision to the accompanying unaudited condensed consolidated balance sheet, condensed consolidated statement of stockholders’ equity, and condensed consolidated statement of cash flows are as follows.

Condensed Consolidated Balance Sheet

	As of December 31, 2021
	As Reported		Adjustments		As Revised
	(In millions)
ASSETS
Current Assets
Cash and cash equivalents	$	700.4	$	—	$	700.4
Restricted cash	3.0		—		3.0
Marketable securities	10.6		—		10.6
Accounts receivable, net	60.6		—		60.6
Contract assets	354.2		—		354.2
Other current assets, net	107.8		(8.3)		99.5
Total Current Assets	1,236.6		(8.3)		1,228.3
Noncurrent Assets
Right-of-use assets	52.6		—		52.6
Property, plant and equipment, net	421.1		—		421.1
Recoverable environmental remediation costs	226.2		—		226.2
Deferred income taxes	57.5		(1.9)		55.6
Goodwill	161.4		—		161.4
Intangible assets	34.9		—		34.9
Other noncurrent assets, net	243.3		—		243.3
Total Noncurrent Assets	1,197.0		(1.9)		1,195.1
Total Assets	$	2,433.6	$	(10.2)	$	2,423.4
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current Liabilities
Current portion of long-term debt	$	166.7	$	—	$	166.7
Accounts payable	132.2		—		132.2
Reserves for environmental remediation costs	37.7		—		37.7
Contract liabilities	366.5		—		366.5
Other current liabilities	172.7		—		172.7
Total Current Liabilities	875.8		—		875.8
Noncurrent Liabilities
Long-term debt	294.6		—		294.6
Reserves for environmental remediation costs	258.7		—		258.7
Pension benefits	255.9		—		255.9
Operating lease liabilities	41.3		—		41.3
Other noncurrent liabilities	173.8		—		173.8
Total Noncurrent Liabilities	1,024.3		—		1,024.3
Total Liabilities	1,900.1		—		1,900.1
Commitments and contingencies (Note 8)
Stockholders’ Equity
Common stock	8.0		—		8.0
Other capital	599.0		(20.9)		578.1
Treasury stock at cost	(64.4)		—		(64.4)
Retained earnings	91.9		10.7		102.6
Accumulated other comprehensive loss, net of income taxes	(101.0)		—		(101.0)
Total Stockholders’ Equity	533.5		(10.2)		523.3
Total Liabilities and Stockholders’ Equity	$	2,433.6	$	(10.2)	$	2,423.4

Condensed Consolidated Statements of Stockholders’ Equity

	Three Months Ended March 31, 2021
	As Reported		Adjustments		As Revised
	(In millions)
Common stock	$	8.0	$	—	$	8.0
Other capital	583.3		(20.9)		562.4
Treasury stock	(64.4)		—		(64.4)
Accumulated deficit	(33.8)		7.8		(26.0)
Accumulated other comprehensive loss	(216.1)		—		(216.1)
Total stockholders' equity	$	277.0	$	(13.1)	$	263.9

Condensed Consolidated Statement of Cash Flows

	Three Months Ended March 31, 2021
	As Reported		Adjustments		As Revised
	(In millions)
Operating Activities
Net income	$	18.1	$	—	$	18.1
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	15.2		—		15.2
Amortization of debt discount and deferred financing costs	1.5		—		1.5
Stock-based compensation	2.8		—		2.8
Retirement benefits, net	(2.5)		—		(2.5)
Loss on debt	9.1		—		9.1
Other, net	(0.3)		—		(0.3)
Changes in assets and liabilities:
Accounts receivable, net	(130.7)		—		(130.7)
Contract assets	(11.9)		—		(11.9)
Other current assets, net	11.1		3.0		14.1
Recoverable environmental remediation costs	3.9		—		3.9
Other noncurrent assets	2.3		—		2.3
Accounts payable	(27.4)		—		(27.4)
Contract liabilities	29.9		—		29.9
Other current liabilities	14.6		—		14.6
Deferred income taxes	—		(3.0)		(3.0)
Reserves for environmental remediation costs	(5.3)		—		(5.3)
Other noncurrent liabilities and other	0.2				0.2
Net Cash Used in Operating Activities	(69.4)		—		(69.4)
Investing Activities
Net Cash Used in Investing Activities	(5.7)		—		(5.7)
Financing Activities
Net Cash Used in Financing Activities	(570.7)		—		(570.7)
Net Decrease in Cash, Cash Equivalents and Restricted Cash	(645.8)		—		(645.8)
Cash, Cash Equivalents and Restricted Cash at Beginning of Year	1,152.5		—		1,152.5
Cash, Cash Equivalents and Restricted Cash at End of Year	$	506.7	$	—	$	506.7

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Basis of Presentation and Nature of Operations (Policies)

3 Months Ended

Mar. 31, 2022

Accounting Policies [Abstract]

Basis of Presentation and Nature of Operations

Aerojet Rocketdyne Holdings, Inc. ("Aerojet Rocketdyne Holdings" or the "Company") has prepared the accompanying unaudited condensed consolidated financial statements, including the accounts of the Company and its 100% owned and majority owned subsidiaries, in accordance with the instructions to Form 10-Q. The December 31, 2021, condensed consolidated balance sheet was derived from audited financial statements, but does not include all of the disclosures required by accounting principles generally accepted in the United States of America ("GAAP"). These interim financial statements should be read in conjunction with the financial statements and accompanying notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2021. Certain reclassifications have been made to financial information for prior years to conform to the current year’s presentation.

The Company believes the accompanying unaudited condensed consolidated financial statements reflect all adjustments, including normal recurring accruals, necessary for a fair statement of its financial position, results of operations, and cash flows for the periods presented. All significant intercompany balances and transactions have been eliminated in consolidation. The preparation of the unaudited condensed consolidated financial statements in conformity with GAAP requires the Company to make estimates and assumptions that affect the amounts reported in the unaudited condensed consolidated financial statements and accompanying notes. Actual results could differ from those estimates. In addition, the operating results for interim periods may not be indicative of the results of operations for a full year.

The Company’s operations are organized into two segments:

Aerospace and Defense — includes the operations of the Company’s wholly-owned subsidiary Aerojet Rocketdyne, Inc. ("Aerojet Rocketdyne"), a leading technology-based designer, developer and manufacturer of aerospace and defense products and systems for the United States ("U.S.") government, including the Department of Defense ("DoD"), the National Aeronautics and Space Administration ("NASA"), and major aerospace and defense prime contractors.

Real Estate — includes the activities of the Company’s wholly-owned subsidiary Easton Development Company, LLC ("Easton") related to the re-zoning, entitlement, sale, and leasing of the Company’s excess real estate assets.

Fiscal Period, Policy

The fiscal year of the Company's subsidiary, Aerojet Rocketdyne, ends on the last Saturday in December.

Recently Issued Accounting Pronouncements

Recently Issued Accounting PronouncementsIn August 2020, the Financial Accounting Standards Board issued guidance which simplifies the accounting for convertible instruments. This guidance eliminates certain models that require separate accounting for embedded conversion features, in certain cases. Additionally, among other changes, the guidance eliminates certain of the conditions for equity classification for contracts in an entity’s own equity. The guidance also requires entities to use the if-converted method for all convertible instruments in the diluted earnings per share calculation and include the effect of share settlement for instruments that may be settled in cash or shares, except for certain liability-classified share-based payment awards. The Company adopted the new guidance as of January 1, 2022, using the modified retrospective approach resulting in the following adjustment (i) a decrease of $1.9 million in deferred tax liabilities, (ii) a decrease of $5.6 million in other capital, (iii) a decrease of $1.0 million in retained earnings, and (iv) an increase of $8.5 million in debt.

Revenue Recognition

Revenue RecognitionIn the Company’s Aerospace and Defense segment, the majority of revenue is earned from long-term contracts to design, develop, and manufacture aerospace and defense products for, and provide related services to, the Company’s customers, including the U.S. government and major aerospace and defense prime contractors.In the Company’s Aerospace and Defense segment, the timing of revenue recognition, customer invoicing, and collections produces accounts receivable, contract assets, and contract liabilities in the unaudited condensed consolidated balance sheets.

Environmental Reserves

Environmental Reserves

The Company reviews on a quarterly basis estimated future remediation costs and has an established practice of estimating environmental remediation costs over a fifteen year period, except for those environmental remediation costs with a specific contractual term. Environmental liabilities at the BPOU site are currently estimated through the term of the project agreement, which expires in May 2027. As the period for which estimated environmental remediation costs lengthens, the reliability of such estimates decreases. These estimates consider the investigative work and analysis of engineers, outside environmental consultants, and the advice of legal staff regarding the status and anticipated results of various administrative and legal proceedings. In most cases, only a range of reasonably possible costs can be estimated. In establishing the Company’s reserves, the most probable estimate is used when determinable; otherwise, the minimum amount is used when no single amount in the range is more probable. Accordingly, such estimates can change as the Company periodically evaluates and revises these estimates as new information becomes available. The Company cannot predict whether new information gained as projects progress will affect the estimated liability accrued. The timing of payment for estimated future environmental costs is influenced by a number of factors, such as the regulatory approval process and the time required designing, constructing, and implementing the remedy.

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Earnings Per Share ("EPS") of Common Stock (Tables)

3 Months Ended

Mar. 31, 2022

Earnings Per Share [Abstract]

Summary of Reconciliation of Numerator and Denominator Used to Calculate Basic and Diluted Income (Loss) Per Share of Common Stock

The following table reconciles the numerator and denominator used to calculate basic and diluted EPS of common stock:

	Three months ended March 31,
	2022		2021
	(In millions, except per share amounts)
Numerator:
Net income	$	27.8	$	18.1
Income allocated to participating securities	(0.1)		(0.1)
Net income for basic EPS	$	27.7	$	18.0
Interest on 2¼% Notes	0.7		—
Net income for diluted EPS	$	28.4	$	18.0
Denominator:
Basic weighted average shares	80.2		77.6
Effect of:
21/4% Notes	5.6		3.1
Diluted weighted average shares	85.8		80.7
Basic
Basic EPS	$	0.34	$	0.23
Diluted
Diluted EPS	$	0.33	$	0.22

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Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2022

Revenue from Contract with Customer [Abstract]

Summary of Impact of Contracts in Progress on Statement of Operations

The following table summarizes the impact of the changes in significant contract accounting estimates on the Company’s Aerospace and Defense segment operating results:

	Three months ended March 31,
	2022		2021
	(In millions, except per share amounts)
Net unfavorable effect of the changes in contract estimates on net sales	$	(0.2)	$	(1.9)
Net unfavorable effect of the changes in contract estimates on income before income taxes	(2.7)		(2.4)
Net unfavorable effect of the changes in contract estimates on net income	(2.0)		(1.9)
Net unfavorable effect of the changes in contract estimates on basic and diluted EPS	(0.02)		(0.02)

Schedule of Contract Asset and Liability

The following table summarizes contract assets and liabilities:

	March 31, 2022		December 31, 2021
	(In millions)
Contract assets	$	378.6	$	359.6
Reserve for overhead rate disallowance	(6.6)		(5.4)
Contract assets, net of reserve	372.0		354.2
Contract liabilities	366.7		366.5
Net contract assets (liabilities), net of reserve	$	5.3	$	(12.3)

Schedules of Percentage of Net Sales by Contract and Customer Type

The following table summarizes the percentages of net sales by contract type:

	Three months ended March 31,
	2022		2021
Fixed-price	56	%	51	%
Cost-reimbursable	44		49

The principal end user customers are primarily agencies of the U.S. government as illustrated in the following table:

	Three months ended March 31,
	2022		2021
U.S. government	95	%	97	%
Non U.S. government	5		3

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Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2022

Share-based Payment Arrangement [Abstract]

Summary of Stock-Based Compensation Expense by Type of Award

The following table summarizes stock-based compensation by type of award:

	Three months ended March 31,
	2022		2021
	(In millions)
Stock Appreciation Rights	$	(4.9)	$	(1.7)
Restricted stock and restricted stock units, service based	1.4		1.3
Restricted stock and restricted stock units, performance based	2.6		2.9
Employee stock purchase plan	—		0.3
Total stock-based compensation (benefit) expense	$	(0.9)	$	2.8

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Balance Sheet Accounts (Tables)

3 Months Ended

Mar. 31, 2022

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Fair Value of Financial Instruments

			Fair value measurement as of March 31, 2022
	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Other Observable Inputs (Level 2)		Unobservable Inputs (Level 3)
	(In millions)
Money market funds	$	360.5	$	360.5	$	—	$	—
Registered investment companies	1.2		1.2		—		—
Commercial paper	139.9		—		139.9		—
Equity securities	10.1		10.1		—		—
Total	$	511.7	$	371.8	$	139.9	$	—

			Fair value measurement as of December 31, 2021
	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Other Observable Inputs (Level 2)		Unobservable Inputs (Level 3)
	(In millions)
Money market funds	$	388.6	$	388.6	$	—	$	—
Registered investment companies	1.3		1.3		—		—
Commercial paper	35.0		—		35.0		—
Equity securities	10.6		10.6		—		—
Total	$	435.5	$	400.5	$	35.0	$	—

Schedule of Estimated Fair Value and Principal Amount of Outstanding Debt

The following table summarizes the estimated fair value and principal amount for outstanding debt obligations excluding finance lease obligations:

	Fair Value				Principal Amount
	March 31, 2022		December 31, 2021		March 31, 2022		December 31, 2021
	(In millions)
Term loan	$	269.8	$	275.8	$	275.6	$	282.2
21/4% Notes	229.9		266.1		145.9		145.9
Total	$	499.7	$	541.9	$	421.5	$	428.1

Schedule of Accounts Receivable

Accounts Receivable

	March 31, 2022		December 31, 2021
	(In millions)
Billed receivables under long-term contracts	$	143.2	$	60.3
Other trade receivables	0.2		0.3
Accounts receivable	$	143.4	$	60.6

Schedule of Other Current Assets

Other Current Assets

	March 31, 2022		December 31, 2021
	(In millions)
Deferred costs recoverable from the U.S. government	$	40.4	$	37.4
Income tax receivable	—		13.8
Inventories	11.1		10.0
Prepaid expenses	15.5		15.3
Other	26.6		23.0
Other current assets	$	93.6	$	99.5

Schedule of Property, Plant and Equipment, net

Property, Plant and Equipment, net

	March 31, 2022		December 31, 2021
	(In millions)
Land	$	71.1	$	71.1
Buildings and improvements	505.1		503.0
Machinery and equipment, including capitalized software	501.6		499.1
Construction-in-progress	48.8		50.0
	1,126.6		1,123.2
Less: accumulated depreciation	(713.3)		(702.1)
Property, plant and equipment, net	$	413.3	$	421.1

Schedule of Other Noncurrent Assets

Other Noncurrent Assets

	March 31, 2022		December 31, 2021
	(In millions)
Real estate held for entitlement and leasing	$	103.8	$	103.7
Deferred costs recoverable from the U.S. government	62.2		62.1
Receivable from Northrop Grumman Corporation for environmental remediation costs	33.0		34.5
Other	37.3		43.0
Other noncurrent assets	$	236.3	$	243.3

Schedule of Other Current Liabilities

Other Current Liabilities

	March 31, 2022		December 31, 2021
	(In millions)
Accrued compensation and employee benefits	$	103.5	$	122.0
Income taxes payable	42.7		—
Other	66.9		50.7
Other current liabilities	$	213.1	$	172.7

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Income Taxes (Tables)

3 Months Ended

Mar. 31, 2022

Income Tax Disclosure [Abstract]

Schedule of Income Tax Provision

	Three months ended March 31,
	2022		2021
	(In millions)
Income tax provision	$	10.5	$	5.6

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Long-term Debt (Tables)

3 Months Ended

Mar. 31, 2022

Debt Disclosure [Abstract]

Summary of Long-Term Debt

	March 31, 2022		December 31, 2021
	(In millions)
Term loan, bearing interest at variable rates (rate of 2.21% as of March 31, 2022), maturing in September 2023	$	275.6	$	282.2
Unamortized deferred financing costs	(0.7)		(0.8)
Total senior debt	274.9		281.4
Convertible senior notes, bearing interest at 2.25% per annum, interest payments due in June and December, maturing in December 2023	145.9		145.9
Unamortized discount and deferred financing costs	(0.7)		(9.4)
Total convertible senior notes	145.2		136.5
Finance leases	42.9		43.4
Total other debt	42.9		43.4
Total debt, net of unamortized discount and deferred financing costs	463.0		461.3
Less: Amounts due within one year	(177.3)		(166.7)
Total long-term debt, net of unamortized discount and deferred financing costs	$	285.7	$	294.6

The following table summarizes information regarding the 2¼% Notes (in millions, except years, percentages, conversion rate, and conversion price):

	March 31, 2022			December 31, 2021
Remaining amortization period (years)	1.75			2.0
Effective interest rate	2.6		%	5.8		%
Conversion rate (shares of common stock per $1,000 principal amount)	38.4615			38.4615
Conversion price (per share of common stock)	$	26.00		$	26.00

The following table presents the interest expense components for the 2¼% Notes:

	Three months ended March 31,
	2022		2021
	(In millions)
Interest expense-contractual interest	$	0.8	$	0.8
Interest expense-amortization of debt discount (see discussion above)	—		1.1
Interest expense-amortization of deferred financing costs	0.1		0.1

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Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2022

Commitments and Contingencies Disclosure [Abstract]

Summary of Environmental Reserve Activity

The following table summarizes the Company’s environmental reserve activity:

	Aerojet Rocketdyne- Sacramento		Aerojet Rocketdyne- BPOU		Other Aerojet Rocketdyne Sites		Total Aerojet Rocketdyne		Other		Total Environmental Reserve
	(In millions)
December 31, 2021	$	214.7	$	64.7	$	11.8	$	291.2	$	5.2	$	296.4
Additions/Adjustments	3.8		(0.4)		0.2		3.6		—		3.6
Expenditures	(3.3)		(2.7)		(0.3)		(6.3)		—		(6.3)
March 31, 2022	$	215.2	$	61.6	$	11.7	$	288.5	$	5.2	$	293.7

Summary of Northrop Agreement Activity

The following table summarizes the Northrop Agreement activity (in millions):

Total reimbursable costs under the Northrop Agreement	$	189.7
Amount reimbursed to the Company through March 31, 2022	(150.7)
Receivable from Northrop included in the unaudited balance sheet at March 31, 2022	$	39.0

Summary of Financial Information for the Impact of Environmental Reserves and Recoveries

The following table summarizes the financial information for the impact of environmental reserves and recoveries to the unaudited condensed consolidated statements of operations:

	Three months ended March 31,
	2022		2021
	(In millions)
Expense to unaudited condensed consolidated statements of operations	$	0.4	$	0.5

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Retirement Benefits (Tables)

3 Months Ended

Mar. 31, 2022

Retirement Benefits [Abstract]

Schedule of Components of Retirement Benefit Expense (Benefit)

The following table presents the components of retirement benefits expense (income): 

	Pension Benefits				Postretirement Medical and Life Insurance Benefits
	Three months ended March 31,
	2022		2021		2022		2021
	(In millions)
Interest cost on benefit obligation	$	8.9	$	8.4	$	0.1	$	0.1
Expected return on assets	(15.7)		(15.3)		—		—
Amortization of net losses (gains)	7.7		15.9		(0.7)		(0.6)
Retirement benefits expense (income)	$	0.9	$	9.0	$	(0.6)	$	(0.5)

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Operating Segments and Related Disclosures (Tables)

3 Months Ended

Mar. 31, 2022

Segment Reporting [Abstract]

Schedule of Selected Financial Information for Each Reportable Segment

The following table presents selected financial information for each reportable segment:

	Three months ended March 31,
	2022		2021
	(In millions)
Net Sales:
Aerospace and Defense	$	510.5	$	495.5
Real Estate	0.6		0.6
Total Net Sales	$	511.1	$	496.1
Segment Performance:
Aerospace and Defense	$	62.7	$	52.4
Environmental remediation provision adjustments	(0.4)		(0.4)
GAAP/Cost Accounting Standards retirement benefits expense difference	9.2		3.2
Unusual items (see Note 11)	(16.3)		(1.7)
Aerospace and Defense Total	55.2		53.5
Real Estate	(0.1)		(0.3)
Total Segment Performance	$	55.1	$	53.2
Reconciliation of segment performance to income before income taxes:
Segment performance	$	55.1	$	53.2
Interest expense	(3.9)		(5.1)
Interest income and other	(0.2)		0.6
Stock-based compensation	0.9		(2.8)
Corporate retirement benefits	—		(1.7)
Corporate and other	(8.2)		(5.6)
Unusual items (see Note 11)	(5.4)		(14.9)
Income before income taxes	$	38.3	$	23.7

Summary of Customers that Represented More than 10% of Net Sales

The following table summarizes customers that represented more than 10% of net sales:

	Three months ended March 31,
	2022		2021
Lockheed Martin	34	%	27	%
NASA	18		26
Raytheon Technologies Corporation	17		15

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Unusual Items (Tables)

3 Months Ended

Mar. 31, 2022

Unusual or Infrequent Items, or Both [Abstract]

Summary of Unusual Items Expense

The following table presents total unusual items in the unaudited condensed consolidated statements of operations:

	Three months ended March 31,
	2022		2021
	(In millions)
Unusual items
Legal matters (component of other expense, net)	$	16.1	$	—
Proxy contest and related litigation costs (component of other expense, net)	3.1		—
Terminated merger costs (component of other expense, net)	2.5		7.5
Loss on debt	—		9.1
	$	21.7	$	16.6

The components of the terminated merger costs are as follows (in millions):

	Three months ended March 31,
	2022		2021
	(In millions)
Legal	$	1.8	$	4.6
Employee compensation	0.3		2.1
Consulting and other professional costs	0.4		0.8
	$	2.5	$	7.5

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Revision of Previously Issued Financial Statements (Tables)

3 Months Ended

Mar. 31, 2022

Accounting Changes and Error Corrections [Abstract]

Schedule of Error Corrections and Prior Period Adjustments

The revision to the accompanying unaudited condensed consolidated balance sheet, condensed consolidated statement of stockholders’ equity, and condensed consolidated statement of cash flows are as follows. Condensed Consolidated Balance Sheet

	As of December 31, 2021
	As Reported		Adjustments		As Revised
	(In millions)
ASSETS
Current Assets
Cash and cash equivalents	$	700.4	$	—	$	700.4
Restricted cash	3.0		—		3.0
Marketable securities	10.6		—		10.6
Accounts receivable, net	60.6		—		60.6
Contract assets	354.2		—		354.2
Other current assets, net	107.8		(8.3)		99.5
Total Current Assets	1,236.6		(8.3)		1,228.3
Noncurrent Assets
Right-of-use assets	52.6		—		52.6
Property, plant and equipment, net	421.1		—		421.1
Recoverable environmental remediation costs	226.2		—		226.2
Deferred income taxes	57.5		(1.9)		55.6
Goodwill	161.4		—		161.4
Intangible assets	34.9		—		34.9
Other noncurrent assets, net	243.3		—		243.3
Total Noncurrent Assets	1,197.0		(1.9)		1,195.1
Total Assets	$	2,433.6	$	(10.2)	$	2,423.4
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current Liabilities
Current portion of long-term debt	$	166.7	$	—	$	166.7
Accounts payable	132.2		—		132.2
Reserves for environmental remediation costs	37.7		—		37.7
Contract liabilities	366.5		—		366.5
Other current liabilities	172.7		—		172.7
Total Current Liabilities	875.8		—		875.8
Noncurrent Liabilities
Long-term debt	294.6		—		294.6
Reserves for environmental remediation costs	258.7		—		258.7
Pension benefits	255.9		—		255.9
Operating lease liabilities	41.3		—		41.3
Other noncurrent liabilities	173.8		—		173.8
Total Noncurrent Liabilities	1,024.3		—		1,024.3
Total Liabilities	1,900.1		—		1,900.1
Commitments and contingencies (Note 8)
Stockholders’ Equity
Common stock	8.0		—		8.0
Other capital	599.0		(20.9)		578.1
Treasury stock at cost	(64.4)		—		(64.4)
Retained earnings	91.9		10.7		102.6
Accumulated other comprehensive loss, net of income taxes	(101.0)		—		(101.0)
Total Stockholders’ Equity	533.5		(10.2)		523.3
Total Liabilities and Stockholders’ Equity	$	2,433.6	$	(10.2)	$	2,423.4

Condensed Consolidated Statements of Stockholders’ Equity

	Three Months Ended March 31, 2021
	As Reported		Adjustments		As Revised
	(In millions)
Common stock	$	8.0	$	—	$	8.0
Other capital	583.3		(20.9)		562.4
Treasury stock	(64.4)		—		(64.4)
Accumulated deficit	(33.8)		7.8		(26.0)
Accumulated other comprehensive loss	(216.1)		—		(216.1)
Total stockholders' equity	$	277.0	$	(13.1)	$	263.9

Condensed Consolidated Statement of Cash Flows

	Three Months Ended March 31, 2021
	As Reported		Adjustments		As Revised
	(In millions)
Operating Activities
Net income	$	18.1	$	—	$	18.1
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	15.2		—		15.2
Amortization of debt discount and deferred financing costs	1.5		—		1.5
Stock-based compensation	2.8		—		2.8
Retirement benefits, net	(2.5)		—		(2.5)
Loss on debt	9.1		—		9.1
Other, net	(0.3)		—		(0.3)
Changes in assets and liabilities:
Accounts receivable, net	(130.7)		—		(130.7)
Contract assets	(11.9)		—		(11.9)
Other current assets, net	11.1		3.0		14.1
Recoverable environmental remediation costs	3.9		—		3.9
Other noncurrent assets	2.3		—		2.3
Accounts payable	(27.4)		—		(27.4)
Contract liabilities	29.9		—		29.9
Other current liabilities	14.6		—		14.6
Deferred income taxes	—		(3.0)		(3.0)
Reserves for environmental remediation costs	(5.3)		—		(5.3)
Other noncurrent liabilities and other	0.2				0.2
Net Cash Used in Operating Activities	(69.4)		—		(69.4)
Investing Activities
Net Cash Used in Investing Activities	(5.7)		—		(5.7)
Financing Activities
Net Cash Used in Financing Activities	(570.7)		—		(570.7)
Net Decrease in Cash, Cash Equivalents and Restricted Cash	(645.8)		—		(645.8)
Cash, Cash Equivalents and Restricted Cash at Beginning of Year	1,152.5		—		1,152.5
Cash, Cash Equivalents and Restricted Cash at End of Year	$	506.7	$	—	$	506.7

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Basis of Presentation and Nature of Operations - Narrative (Details) $ / shares in Units, $ in Millions		3 Months Ended
	Dec. 20, 2020 $ / shares	Mar. 31, 2022 USD ($) segment $ / shares	Mar. 31, 2021 $ / shares	Jan. 01, 2022 USD ($)	Dec. 31, 2021 USD ($) $ / shares	Mar. 10, 2021 $ / shares	Jan. 01, 2021 USD ($)	Jan. 01, 2020 USD ($)	Jan. 01, 2019 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of operating segments | segment		2
Cash dividends declared per share (in USD per share) | $ / shares	$ 5.00	$ 0	$ 5.00
Conversion price (in USD per share) | $ / shares	$ 56.00					$ 51.00
Other capital		$ (572.7)			$ (578.1)		$ (20.9)	$ (20.9)	$ (20.9)
Retained earnings		$ (129.4)			$ (102.6)		$ 7.8	$ (8.0)	$ (7.9)
Cumulative Effect, Period of Adoption, Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred tax liabilities				$ 1.9
Other capital				5.6
Retained earnings				1.0
Long-term debt				$ 8.5
2 1/4% Notes
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Conversion price (in USD per share) | $ / shares		$ 26.00			$ 26.00
2 1/4% Notes | Convertible Debt
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Debt instrument interest rate stated percentage		2.25%
Long-term debt		$ 145.9			$ 145.9

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Earnings Per Share ("EPS") of Common Stock - Reconciliation of Numerator and Denominator (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Numerator:
Net income	$ 27.8	$ 18.1
Income allocated to participating securities	(0.1)	(0.1)
Net income for basic EPS	27.7	18.0
Interest on 2¼% Notes	0.7	0.0
Net income for diluted EPS	$ 28.4	$ 18.0
Denominator:
Basic weighted average shares (in shares)	80.2	77.6
Effect of:
2 1/4% Notes (in shares)	5.6	3.1
Diluted weighted average shares (in shares)	85.8	80.7
Basic
Basic earnings per share (in dollars per share)	$ 0.34	$ 0.23
Diluted
Diluted earnings per share (in dollars per share)	$ 0.33	$ 0.22
Convertible Debt | 2 1/4% Notes
Diluted
Debt instrument interest rate stated percentage	2.25%

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Revenue Recognition - Schedule of Impact of the Change in Contract Estimates on Operating Results (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Change in Accounting Estimate [Line Items]
Net unfavorable effect of the changes in contract estimates on net sales	$ 511.1	$ 496.1
Net unfavorable effect of the changes in contract estimates on net income	$ 27.8	$ 18.1
Net unfavorable effect of the changes in contract estimates on basic EPS (USD per share)	$ 0.34	$ 0.23
Net unfavorable effect of the changes in contract estimates on diluted EPS (USD per share)	$ 0.33	$ 0.22
Aerospace and Defense | Contracts Accounted for under Percentage-of-Completion
Change in Accounting Estimate [Line Items]
Net unfavorable effect of the changes in contract estimates on net sales	$ (0.2)	$ (1.9)
Net unfavorable effect of the changes in contract estimates on income before income taxes	(2.7)	(2.4)
Net unfavorable effect of the changes in contract estimates on net income	$ (2.0)	$ (1.9)
Net unfavorable effect of the changes in contract estimates on basic EPS (USD per share)	$ (0.02)	$ (0.02)
Net unfavorable effect of the changes in contract estimates on diluted EPS (USD per share)	$ (0.02)	$ (0.02)

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Revenue Recognition - Schedule of Contract Asset and Liability (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Revenue from Contract with Customer [Abstract]
Contract assets	$ 378.6	$ 359.6
Reserve for overhead rate disallowance	(6.6)	(5.4)
Contract assets, net of reserve	372.0	354.2
Contract liabilities	366.7	366.5
Net contract assets (liabilities), net of reserve	$ 5.3	$ (12.3)

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Revenue Recognition - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Increase in contract liabilities		$ 17.6
Sales recognized, previously included in contract liabilities	$ 121.8
Remaining performance obligation	6,400.0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation	$ 2,400.0
Remaining performance obligation (percentage)	37.00%
Expected timing of satisfaction, period (years)	12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation (percentage)	26.00%
Expected timing of satisfaction, period (years)	12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation (percentage)	37.00%
Expected timing of satisfaction, period (years)

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Revenue Recognition - Schedule of Percentage of Sales by Contract and Customer (Details) - Sales Revenue, Net	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Contract | Fixed-price
Concentration Risk [Line Items]
Percentage of net sales	56.00%	51.00%
Contract | Cost-reimbursable
Concentration Risk [Line Items]
Percentage of net sales	44.00%	49.00%
Customers | U.S. government
Concentration Risk [Line Items]
Percentage of net sales	95.00%	97.00%
Customers | Non U.S. government
Concentration Risk [Line Items]
Percentage of net sales	5.00%	3.00%
Segment Concentration Risk | Real Estate
Concentration Risk [Line Items]
Percentage of net sales	1.00%	1.00%

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Stock-Based Compensation (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation (benefit) expense	$ (0.9)	$ 2.8
Stock Appreciation Rights
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation (benefit) expense	(4.9)	(1.7)
Restricted stock and restricted stock units, service based
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation (benefit) expense	1.4	1.3
Restricted stock and restricted stock units, performance based
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation (benefit) expense	2.6	2.9
Employee stock purchase plan
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation (benefit) expense	$ 0.0	$ 0.3

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Balance Sheet Accounts - Schedule of Fair Value of Financial Instruments (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of financial assets	$ 511.7	$ 435.5
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of financial assets	371.8	400.5
Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of financial assets	139.9	35.0
Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of financial assets	0.0	0.0
Money market funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of financial assets	360.5	388.6
Money market funds | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of financial assets	360.5	388.6
Money market funds | Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of financial assets	0.0	0.0
Money market funds | Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of financial assets	0.0	0.0
Registered investment companies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of financial assets	1.2	1.3
Registered investment companies | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of financial assets	1.2	1.3
Registered investment companies | Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of financial assets	0.0	0.0
Registered investment companies | Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of financial assets	0.0	0.0
Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of financial assets	139.9	35.0
Commercial paper | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of financial assets	0.0	0.0
Commercial paper | Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of financial assets	139.9	35.0
Commercial paper | Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of financial assets	0.0	0.0
Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of financial assets	10.1	10.6
Equity securities | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of financial assets	10.1	10.6
Equity securities | Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of financial assets	0.0	0.0
Equity securities | Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of financial assets	$ 0.0	$ 0.0

XML

Balance Sheet Accounts - Schedule of Estimated Fair Value and Principal Amount of Outstanding Debt (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Fair Value	$ 499.7	$ 541.9
Principal Amount	421.5	428.1
Term loan
Debt Instrument [Line Items]
Fair Value	269.8	275.8
Principal Amount	275.6	282.2
2 1/4% Notes
Debt Instrument [Line Items]
Fair Value	229.9	266.1
Principal Amount	$ 145.9	$ 145.9
Convertible Debt | 2 1/4% Notes
Debt Instrument [Line Items]
Debt instrument interest rate stated percentage	2.25%

XML

Balance Sheet Accounts - Schedule of Accounts Receivable (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Billed receivables under long-term contracts	$ 143.2	$ 60.3
Other trade receivables	0.2	0.3
Accounts receivable	$ 143.4	$ 60.6

XML

Balance Sheet Accounts - Schedule of Other Current Assets (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Deferred costs recoverable from the U.S. government	$ 40.4	$ 37.4
Income tax receivable	0.0	13.8
Inventories	11.1	10.0
Prepaid expenses	15.5	15.3
Other	26.6	23.0
Other current assets	$ 93.6	$ 99.5

XML

Balance Sheet Accounts - Schedule of Property, Plant and Equipment, net (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 1,126.6	$ 1,123.2
Less: accumulated depreciation	(713.3)	(702.1)
Property, plant and equipment, net	413.3	421.1
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	71.1	71.1
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	505.1	503.0
Machinery and equipment, including capitalized software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	501.6	499.1
Construction-in-progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 48.8	$ 50.0

XML

Balance Sheet Accounts - Schedule of Other Noncurrent Assets (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Real estate held for entitlement and leasing	$ 103.8	$ 103.7
Deferred costs recoverable from the U.S. government	62.2	62.1
Receivable from Northrop Grumman Corporation for environmental remediation costs	33.0	34.5
Other	37.3	43.0
Other noncurrent assets	$ 236.3	$ 243.3

XML

Balance Sheet Accounts - Schedule of Other Current Liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accrued compensation and employee benefits	$ 103.5	$ 122.0
Income taxes payable	42.7	0.0
Other	66.9	50.7
Other current liabilities	$ 213.1	$ 172.7

XML

Balance Sheet Accounts - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Income taxes payable	$ 42.7	$ 0.0
Income tax receivable	$ 0.0	$ 13.8
Environmental remediation costs, new standard amortization period (years)	5 years

XML

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Income tax provision	$ 10.5	$ 5.6	$ 2.9
Effective income tax rate	27.40%	23.60%
Effective income tax rate, federal statutory rate	21.00%	21.00%

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Long-term Debt - Summary of Long-term Debt (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Finance leases	$ 42.9	$ 43.4
Total debt, net of unamortized discount and deferred financing costs	463.0	461.3
Less: Amounts due within one year	(177.3)	(166.7)
Total long-term debt, net of unamortized discount and deferred financing costs	$ 285.7	294.6
Secured debt
Debt Instrument [Line Items]
Effective interest rate (as a percent)	2.21%
Term loan | Secured debt
Debt Instrument [Line Items]
Long-term debt	$ 275.6	282.2
Unamortized deferred financing costs	(0.7)	(0.8)
Senior Notes	$ 274.9	$ 281.4
2 1/4% Notes
Debt Instrument [Line Items]
Effective interest rate (as a percent)	2.60%	5.80%
2 1/4% Notes | Convertible Debt
Debt Instrument [Line Items]
Long-term debt	$ 145.9	$ 145.9
Unamortized deferred financing costs	(0.7)	(9.4)
Total convertible senior notes	145.2	$ 136.5
Less: Amounts due within one year	$ (145.2)
Debt instrument interest rate stated percentage	2.25%

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Long-term Debt - Narrative - Senior Credit Facility (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Outstanding debt balance	$ 421,500,000	$ 428,100,000
Minimum
Debt Instrument [Line Items]
Unused capacity commitment fee percentage	0.30%
Maximum
Debt Instrument [Line Items]
Unused capacity commitment fee percentage	0.45%
Term Loan | Minimum
Debt Instrument [Line Items]
Letter of Credit Fees	1.75%
Term Loan | Minimum | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate on debt instrument	1.75%
Term Loan | Maximum
Debt Instrument [Line Items]
Letter of Credit Fees	2.50%
Term Loan | Maximum | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate on debt instrument	2.50%
Line of credit | Letter of credit
Debt Instrument [Line Items]
Letters of credit outstanding	$ 27,800,000
Senior Credit Facility, Due 2023 | Secured debt
Debt Instrument [Line Items]
Maximum leverage ratio increases for two consecutive quarters	0.50
Senior Credit Facility, Due 2023 | Secured debt | Minimum
Debt Instrument [Line Items]
Required coverage ratio	3.00
Senior Credit Facility, Due 2023 | Secured debt | Maximum
Debt Instrument [Line Items]
Leverage ratio on pro forma basis	3.25
Senior Credit Facility, Due 2023 | Secured debt | Maximum | October 1, 2021, therafter
Debt Instrument [Line Items]
Required leverage ratio	3.50
Senior Credit Facility, Due 2023 | Secured debt | Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 650,000,000
Outstanding debt balance	0
Senior Credit Facility, Due 2023 | Secured debt | Term Loan
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 350,000,000
Senior Credit Facility, Due 2023 | Secured debt | Term Loan | December 31, 2020 - December 30, 2022
Debt Instrument [Line Items]
Annual principal payment as a percent	7.50%
Senior Credit Facility, Due 2023 | Secured debt | Term Loan | December 31, 2022 - maturity
Debt Instrument [Line Items]
Annual principal payment as a percent	10.00%

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Long-term Debt - 2.25% Convertible Senior Notes (Details)	3 Months Ended
	Mar. 31, 2022 USD ($) trading_day $ / shares	Dec. 31, 2021 USD ($)	Dec. 14, 2016 USD ($)
Debt Instrument [Line Items]
Current portion of long-term debt	$ 177,300,000	$ 166,700,000
Share price (in USD per share) | $ / shares	$ 39.35
Convertible Debt | 2 1/4% Notes
Debt Instrument [Line Items]
Debt Instrument, Face Amount			$ 300,000,000
Debt instrument interest rate stated percentage	2.25%
Debt convertible trigger stock price (in USD per share) | $ / shares	$ 33.80
Debt convertible threshold trading days | trading_day	20
Debt convertible threshold consecutive trading days | trading_day	30
Current portion of long-term debt	$ 145,200,000
Convertible debt threshold percentage of stock price trigger	130.00%
Debt Component of Convertible Debt | 2 1/4% Notes
Debt Instrument [Line Items]
If-converted value in excess of principal	$ 74,900,000

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Long-term Debt - Schedule of 2.25% Convertible Senior Notes (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2022 $ / shares	Mar. 31, 2021	Dec. 31, 2021 $ / shares	Mar. 10, 2021 $ / shares	Dec. 20, 2020 $ / shares
Debt Instrument [Line Items]
Conversion price (in USD per share)				$ 51.00	$ 56.00
2 1/4% Notes
Debt Instrument [Line Items]
Remaining amortization period (years)	1 year 9 months		2 years
Effective interest rate (as a percent)	2.60%		5.80%
Common stock conversion rate (in shares per USD)	0.0384615	0.0384615
Conversion price (in USD per share)	$ 26.00		$ 26.00

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Long-Term Debt - Interest Expense Components for the 2¼% Notes (Details) - 2 1/4% Notes - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Debt Instrument [Line Items]
Interest expense-contractual interest	$ 0.8	$ 0.8
Interest expense-amortization of debt discount (see discussion above)	0.0	1.1
Interest expense-amortization of deferred financing costs	$ 0.1	$ 0.1

XML

Commitments and Contingencies - Narrative - Legal Matters (Details) $ in Millions	Apr. 27, 2022 USD ($)	Mar. 31, 2022 legal_matter
Asbestos Litigation
Loss Contingencies [Line Items]
Unresolved asbestos cases pending | legal_matter		133
United States Ex. Rel. Markus Vs. Aerojet Rocketdyne Holdings | Pending Litigation | Subsequent Event
Loss Contingencies [Line Items]
Settlement in principle, amount	$ 9.0
Attorney's fees	$ 3.0

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Commitments and Contingencies - Narrative - Environmental Matters (Details)		3 Months Ended	12 Months Ended
	May 09, 2017	Mar. 31, 2022 USD ($) legal_matter	Dec. 31, 2002 USD ($) a respondent water_company	Dec. 31, 2021 USD ($)	Oct. 31, 2001 USD ($)
Site Contingency [Line Items]
Accrued environmental costs		$ 293,700,000		$ 296,400,000
Guarantee obligations		$ 120,000,000
Various Environmental Matters
Site Contingency [Line Items]
Number of environmental remediation matters (over) | legal_matter		40
Accrued environmental costs		$ 293,700,000
Environmental obligation funding percent		98.00%
Various Environmental Matters | Sacramento, California
Site Contingency [Line Items]
Accrued environmental costs		$ 215,200,000
Various Environmental Matters | Sacramento, California | Environmental Protection Agency
Site Contingency [Line Items]
Non-contaminated land | a			2,600
Various Environmental Matters | Sacramento, California | Previously Reported
Site Contingency [Line Items]
Guarantee obligations			$ 20,000,000
Various Environmental Matters | Baldwin Park Operable Unit
Site Contingency [Line Items]
Accrued environmental costs		$ 61,600,000
Guarantee obligations					$ 25,000,000
Various Environmental Matters | Baldwin Park Operable Unit | Aerojet Rocketdyne, Inc.
Site Contingency [Line Items]
Percentage of responsibility in all project costs		74.00%
Various Environmental Matters | Baldwin Park Operable Unit | Environmental Protection Agency
Site Contingency [Line Items]
Number of respondents | respondent			7
Number of water companies | water_company			5
Term of arrangement (years)	10 years
Various Environmental Matters | Minimum
Site Contingency [Line Items]
Estimated environmental costs		$ 293,700,000
Various Environmental Matters | Minimum | Sacramento, California
Site Contingency [Line Items]
Estimated environmental costs		215,200,000
Guarantee obligations			$ 10,000,000
Various Environmental Matters | Minimum | Baldwin Park Operable Unit
Site Contingency [Line Items]
Estimated environmental costs		61,600,000
Various Environmental Matters | Maximum
Site Contingency [Line Items]
Estimated environmental costs		451,200,000
Various Environmental Matters | Maximum | Sacramento, California
Site Contingency [Line Items]
Estimated environmental costs		349,200,000
Guarantee obligations			$ 75,000,000
Various Environmental Matters | Maximum | Baldwin Park Operable Unit
Site Contingency [Line Items]
Estimated environmental costs		$ 74,300,000

XML

Commitments and Contingencies - Narrative - Environmental Reserves and Estimated Recoveries (Details) $ in Millions	3 Months Ended
	Mar. 31, 2022 USD ($)
Site Contingency [Line Items]
Environmental remediation cost expected period (years)	15 years
Non-reimbursable percentage of environmental costs	12.00%
Northrop
Site Contingency [Line Items]
Percentage of environmental remediation costs recoverable	88.00%
Current annual billing limitation	$ 6.0
Reimbursable remediation cost	$ 189.7

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Commitments and Contingencies - Summary of Environmental Reserve Activity (Details) $ in Millions	3 Months Ended
	Mar. 31, 2022 USD ($)
Accrual for Environmental Loss Contingencies [Roll Forward]
Beginning balance	$ 296.4
Additions/Adjustments	3.6
Expenditures	(6.3)
Ending balance	293.7
Aerojet Rocketdyne- Sacramento
Accrual for Environmental Loss Contingencies [Roll Forward]
Beginning balance	214.7
Additions/Adjustments	3.8
Expenditures	(3.3)
Ending balance	215.2
Aerojet Rocketdyne- BPOU
Accrual for Environmental Loss Contingencies [Roll Forward]
Beginning balance	64.7
Additions/Adjustments	(0.4)
Expenditures	(2.7)
Ending balance	61.6
Other Aerojet Rocketdyne Sites
Accrual for Environmental Loss Contingencies [Roll Forward]
Beginning balance	11.8
Additions/Adjustments	0.2
Expenditures	(0.3)
Ending balance	11.7
Total Aerojet Rocketdyne
Accrual for Environmental Loss Contingencies [Roll Forward]
Beginning balance	291.2
Additions/Adjustments	3.6
Expenditures	(6.3)
Ending balance	288.5
Other
Accrual for Environmental Loss Contingencies [Roll Forward]
Beginning balance	5.2
Additions/Adjustments	0.0
Expenditures	0.0
Ending balance	$ 5.2

XML

Commitments and Contingencies - Summary of Northrop Agreement Activity (Details) - Northrop $ in Millions	Mar. 31, 2022 USD ($)
Contingencies And Commitments [Line Items]
Total reimbursable costs under the Northrop Agreement	$ 189.7
Amount reimbursed to the Company through March 31, 2022	(150.7)
Receivable from Northrop included in the unaudited balance sheet at March 31, 2022	$ 39.0

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Commitments and Contingencies - Summary of Financial Information for the Impact of Environmental Reserves and Recoveries (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Expense to unaudited condensed consolidated statements of operations	$ 0.4	$ 0.5

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Commitments and Contingencies - Arrangements with Off-Balance Sheet Risk (Details) $ in Millions	3 Months Ended
	Mar. 31, 2022 USD ($)
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Outstanding surety bonds	$ 56.6
Guarantee obligations	$ 120.0
Product warranty period	1 year
Letter of credit | Line of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Letters of credit outstanding	$ 27.8

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Retirement Benefits - Schedule of Components of Retirement Benefit Expense (Income) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Interest cost on benefit obligation	$ 8.9	$ 8.4
Expected return on assets	(15.7)	(15.3)
Amortization of net losses (gains)	7.7	15.9
Retirement benefits expense (income)	0.9	9.0
Postretirement Medical and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Interest cost on benefit obligation	0.1	0.1
Expected return on assets	0.0	0.0
Amortization of net losses (gains)	(0.7)	(0.6)
Retirement benefits expense (income)	$ (0.6)	$ (0.5)

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Operating Segments and Related Disclosures - Narrative (Details)	3 Months Ended
	Mar. 31, 2022 segment
Segment Reporting [Abstract]
Number of operating segments	2

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Operating Segments and Related Disclosures - Schedule of Selected Financial Information for Each Reportable Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Net Sales:
Net sales	$ 511.1	$ 496.1
Reconciliation of segment performance to income before income taxes:
Segment performance	42.7	45.8
Interest expense	(3.9)	(5.1)
Stock-based compensation	0.9	(2.8)
Income before income taxes	38.3	23.7
Operating Segments
Net Sales:
Net sales	511.1	496.1
Reconciliation of segment performance to income before income taxes:
Segment performance	55.1	53.2
Operating Segments | Aerospace and Defense
Net Sales:
Net sales	510.5	495.5
Segment Performance:
Aerospace and Defense	62.7	52.4
Environmental remediation provision adjustments	(0.4)	(0.4)
Retirement benefits, net	9.2	3.2
Unusual items	(16.3)	(1.7)
Reconciliation of segment performance to income before income taxes:
Segment performance	55.2	53.5
Unusual items	(16.3)	(1.7)
Operating Segments | Real Estate
Net Sales:
Net sales	0.6	0.6
Reconciliation of segment performance to income before income taxes:
Segment performance	(0.1)	(0.3)
Segment Reconciling Items
Segment Performance:
Unusual items	(5.4)	(14.9)
Reconciliation of segment performance to income before income taxes:
Segment performance	55.1	53.2
Interest expense	(3.9)	(5.1)
Interest income and other	(0.2)	0.6
Stock-based compensation	0.9	(2.8)
Unusual items	(5.4)	(14.9)
Corporate, Non-Segment
Segment Performance:
Retirement benefits, net	0.0	(1.7)
Reconciliation of segment performance to income before income taxes:
Corporate and other	$ (8.2)	$ (5.6)

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Operating Segments and Related Disclosures - Summary of Customers that Represented More than 10% of Net Sales (Details) - Customers - Sales Revenue, Net	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Lockheed Martin
Revenue, Major Customer [Line Items]
Percentage of net sales	34.00%	27.00%
NASA
Revenue, Major Customer [Line Items]
Percentage of net sales	18.00%	26.00%
Raytheon Technologies Corporation
Revenue, Major Customer [Line Items]
Percentage of net sales	17.00%	15.00%

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Unusual Items - Summary of Unusual Items Expense (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Unusual or Infrequent Item [Line Items]
Loss on debt	$ 0.0	$ 9.1
Unusual Items
Unusual or Infrequent Item [Line Items]
Legal matters (component of other expense, net)	16.1	0.0
Proxy contest and related litigation costs (component of other expense, net)	3.1	0.0
Terminated merger costs (component of other expense, net)	2.5	7.5
Loss on debt	0.0	9.1
Total unusual items	$ 21.7	$ 16.6

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Unusual Items - Narrative (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Debt Instrument [Line Items]
Loss on debt	$ 0.0	$ (9.1)
2 1/4% Notes | Convertible Debt
Debt Instrument [Line Items]
Extinguishment of debt	$ 135.4
Converted instrument, shares settled (in shares)	2.6
Debt instrument interest rate stated percentage	2.25%
Loss on debt	$ (9.1)
Unusual Items
Debt Instrument [Line Items]
Legal matters (component of other expense, net)	16.1	0.0
Proxy contest and related litigation costs (component of other expense, net)	3.1	0.0
Terminated merger costs (component of other expense, net)	2.5	7.5
Loss on debt	$ 0.0	$ (9.1)

XML

Unusual Items - Schedule of Merger Costs (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Unusual or Infrequent Item [Line Items]
Gain on legal matters and settlements	$ 2.5	$ 7.5
Legal
Unusual or Infrequent Item [Line Items]
Gain on legal matters and settlements	1.8	4.6
Employee compensation
Unusual or Infrequent Item [Line Items]
Gain on legal matters and settlements	0.3	2.1
Consulting and other professional costs
Unusual or Infrequent Item [Line Items]
Gain on legal matters and settlements	$ 0.4	$ 0.8

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Revision of Previously Issued Financial Statements - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Jan. 01, 2021	Jan. 01, 2020	Jan. 01, 2019
Reclassification [Line Items]
Other capital	$ 572.7		$ 578.1	$ 20.9	$ 20.9	$ 20.9
Retained earnings	129.4		102.6	$ (7.8)	$ 8.0	$ 7.9
Income tax provision	$ 10.5	$ 5.6	2.9
Reclassifications due to Adoption
Reclassification [Line Items]
Other capital			(20.9)
Retained earnings			$ 10.7

XML

Revision of Previously Issued Financial Statements - Condensed Consolidated Balance Sheet (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Jan. 01, 2021	Dec. 31, 2020	Jan. 01, 2020	Jan. 01, 2019
Reclassification [Line Items]
Cash and cash equivalents	$ 610.9	$ 700.4
Restricted cash	3.0	3.0
Marketable securities	10.1	10.6
Accounts receivable	143.4	60.6
Contract assets	372.0	354.2
Other current assets	93.6	99.5
Total Current Assets	1,233.0	1,228.3
Right-of-use assets	49.8	52.6
Property, plant and equipment, net	413.3	421.1
Recoverable environmental remediation costs	220.7	226.2
Deferred income taxes	101.5	55.6
Goodwill	161.4	161.4
Intangible assets	33.1	34.9
Other noncurrent assets	236.3	243.3
Total Noncurrent Assets	1,216.1	1,195.1
Total Assets	2,449.1	2,423.4
Current portion of long-term debt	177.3	166.7
Accounts payable	115.1	132.2
Reserves for environmental remediation costs	41.2	37.7
Contract liabilities	366.7	366.5
Other current liabilities	213.1	172.7
Total Current Liabilities	913.4	875.8
Long-term debt	285.7	294.6
Reserves for environmental remediation costs	252.5	258.7
Pension benefits	242.9	255.9
Operating lease liabilities	38.8	41.3
Other noncurrent liabilities	165.9	173.8
Total Noncurrent Liabilities	985.8	1,024.3
Total Liabilities	1,899.2	1,900.1
Common stock, par value of $0.10; 150.0 million shares authorized; 80.3 million shares outstanding as of March 31, 2022; 80.1 million shares outstanding as of December 31, 2021	8.0	8.0
Other capital	572.7	578.1		$ 20.9		$ 20.9	$ 20.9
Treasury stock at cost	(64.4)	(64.4)
Retained earnings	129.4	102.6		$ (7.8)		$ 8.0	$ 7.9
Accumulated other comprehensive loss, net of income taxes	(95.8)	(101.0)
Total Stockholders’ Equity	549.9	523.3	$ 263.9		$ 220.4
Total Liabilities and Stockholders’ Equity	$ 2,449.1	2,423.4
Previously Reported
Reclassification [Line Items]
Cash and cash equivalents		700.4
Restricted cash		3.0
Marketable securities		10.6
Accounts receivable		60.6
Contract assets		354.2
Other current assets		107.8
Total Current Assets		1,236.6
Right-of-use assets		52.6
Property, plant and equipment, net		421.1
Recoverable environmental remediation costs		226.2
Deferred income taxes		57.5
Goodwill		161.4
Intangible assets		34.9
Other noncurrent assets		243.3
Total Noncurrent Assets		1,197.0
Total Assets		2,433.6
Current portion of long-term debt		166.7
Accounts payable		132.2
Reserves for environmental remediation costs		37.7
Contract liabilities		366.5
Other current liabilities		172.7
Total Current Liabilities		875.8
Long-term debt		294.6
Reserves for environmental remediation costs		258.7
Pension benefits		255.9
Operating lease liabilities		41.3
Other noncurrent liabilities		173.8
Total Noncurrent Liabilities		1,024.3
Total Liabilities		1,900.1
Common stock, par value of $0.10; 150.0 million shares authorized; 80.3 million shares outstanding as of March 31, 2022; 80.1 million shares outstanding as of December 31, 2021		8.0
Other capital		599.0
Treasury stock at cost		(64.4)
Retained earnings		91.9
Accumulated other comprehensive loss, net of income taxes		(101.0)
Total Stockholders’ Equity		533.5	277.0
Total Liabilities and Stockholders’ Equity		2,433.6
Adjustments
Reclassification [Line Items]
Cash and cash equivalents		0.0
Restricted cash		0.0
Marketable securities		0.0
Accounts receivable		0.0
Contract assets		0.0
Other current assets		(8.3)
Total Current Assets		(8.3)
Right-of-use assets		0.0
Property, plant and equipment, net		0.0
Recoverable environmental remediation costs		0.0
Deferred income taxes		(1.9)
Goodwill		0.0
Intangible assets		0.0
Other noncurrent assets		0.0
Total Noncurrent Assets		(1.9)
Total Assets		(10.2)
Current portion of long-term debt		0.0
Accounts payable		0.0
Reserves for environmental remediation costs		0.0
Contract liabilities		0.0
Other current liabilities		0.0
Total Current Liabilities		0.0
Long-term debt		0.0
Reserves for environmental remediation costs		0.0
Pension benefits		0.0
Operating lease liabilities		0.0
Other noncurrent liabilities		0.0
Total Noncurrent Liabilities		0.0
Total Liabilities		0.0
Common stock, par value of $0.10; 150.0 million shares authorized; 80.3 million shares outstanding as of March 31, 2022; 80.1 million shares outstanding as of December 31, 2021		0.0
Other capital		(20.9)
Treasury stock at cost		0.0
Retained earnings		10.7
Accumulated other comprehensive loss, net of income taxes		0.0
Total Stockholders’ Equity		(10.2)	$ (13.1)
Total Liabilities and Stockholders’ Equity		$ (10.2)

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Revision of Previously Issued Financial Statements - Condensed Consolidated Statements of Stockholders’ Equity (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
Reclassification [Line Items]
Total Stockholders’ Equity	$ 549.9	$ 523.3	$ 263.9	$ 220.4
Common stock
Reclassification [Line Items]
Total Stockholders’ Equity	8.0	8.0	8.0	7.7
Other capital
Reclassification [Line Items]
Total Stockholders’ Equity	572.7	578.1	562.4	562.1
Treasury stock
Reclassification [Line Items]
Total Stockholders’ Equity	(64.4)	(64.4)	(64.4)	(64.4)
Accumulated deficit
Reclassification [Line Items]
Total Stockholders’ Equity	129.4	102.6	(26.0)	(57.4)
Accumulated other comprehensive loss
Reclassification [Line Items]
Total Stockholders’ Equity	$ (95.8)	(101.0)	(216.1)	$ (227.6)
Previously Reported
Reclassification [Line Items]
Total Stockholders’ Equity		533.5	277.0
Previously Reported | Common stock
Reclassification [Line Items]
Total Stockholders’ Equity			8.0
Previously Reported | Other capital
Reclassification [Line Items]
Total Stockholders’ Equity			583.3
Previously Reported | Treasury stock
Reclassification [Line Items]
Total Stockholders’ Equity			(64.4)
Previously Reported | Accumulated deficit
Reclassification [Line Items]
Total Stockholders’ Equity			(33.8)
Previously Reported | Accumulated other comprehensive loss
Reclassification [Line Items]
Total Stockholders’ Equity			(216.1)
Adjustments
Reclassification [Line Items]
Total Stockholders’ Equity		$ (10.2)	(13.1)
Adjustments | Common stock
Reclassification [Line Items]
Total Stockholders’ Equity			0.0
Adjustments | Other capital
Reclassification [Line Items]
Total Stockholders’ Equity			(20.9)
Adjustments | Treasury stock
Reclassification [Line Items]
Total Stockholders’ Equity			0.0
Adjustments | Accumulated deficit
Reclassification [Line Items]
Total Stockholders’ Equity			7.8
Adjustments | Accumulated other comprehensive loss
Reclassification [Line Items]
Total Stockholders’ Equity			$ 0.0

XML

Revision of Previously Issued Financial Statements - Condensed Consolidated Statement of Cash Flows (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Reclassification [Line Items]
Net income	$ 27.8	$ 18.1
Depreciation and amortization	14.4	15.2
Amortization of debt discount and deferred financing costs	0.4	1.5
Stock-based compensation	(0.9)	2.8
Retirement benefits, net	(6.6)	(2.5)
Loss on debt	0.0	9.1
Other, net	0.5	(0.3)
Accounts receivable	(82.8)	(130.7)
Contract assets	(17.8)	(11.9)
Other current assets	5.9	14.1
Recoverable environmental remediation costs	5.5	3.9
Other noncurrent assets	6.8	2.3
Accounts payable	(19.0)	(27.4)
Contract liabilities	0.2	29.9
Other current liabilities	45.3	14.6
Deferred income taxes	(45.8)	(3.0)
Reserves for environmental remediation costs	(2.7)	(5.3)
Other noncurrent liabilities and other	(6.2)	0.2
Net Cash Used in Operating Activities	(75.0)	(69.4)
Net Cash Used in Investing Activities	(2.2)	(5.7)
Net Cash Used in Financing Activities	(12.3)	(570.7)
Net Decrease in Cash, Cash Equivalents and Restricted Cash	(89.5)	(645.8)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	703.4	1,152.5
Cash, Cash Equivalents and Restricted Cash at End of Period	$ 613.9	506.7
Previously Reported
Reclassification [Line Items]
Net income		18.1
Depreciation and amortization		15.2
Amortization of debt discount and deferred financing costs		1.5
Stock-based compensation		2.8
Retirement benefits, net		(2.5)
Loss on debt		9.1
Other, net		(0.3)
Accounts receivable		(130.7)
Contract assets		(11.9)
Other current assets		11.1
Recoverable environmental remediation costs		3.9
Other noncurrent assets		2.3
Accounts payable		(27.4)
Contract liabilities		29.9
Other current liabilities		14.6
Deferred income taxes		0.0
Reserves for environmental remediation costs		(5.3)
Other noncurrent liabilities and other		0.2
Net Cash Used in Operating Activities		(69.4)
Net Cash Used in Investing Activities		(5.7)
Net Cash Used in Financing Activities		(570.7)
Net Decrease in Cash, Cash Equivalents and Restricted Cash		(645.8)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period		1,152.5
Cash, Cash Equivalents and Restricted Cash at End of Period		506.7
Adjustments
Reclassification [Line Items]
Net income		0.0
Depreciation and amortization		0.0
Amortization of debt discount and deferred financing costs		0.0
Stock-based compensation		0.0
Retirement benefits, net		0.0
Loss on debt		0.0
Other, net		0.0
Accounts receivable		0.0
Contract assets		0.0
Other current assets		3.0
Recoverable environmental remediation costs		0.0
Other noncurrent assets		0.0
Accounts payable		0.0
Contract liabilities		0.0
Other current liabilities		0.0
Deferred income taxes		(3.0)
Reserves for environmental remediation costs		0.0
Other noncurrent liabilities and other
Net Cash Used in Operating Activities		0.0
Net Cash Used in Investing Activities		0.0
Net Cash Used in Financing Activities		0.0
Net Decrease in Cash, Cash Equivalents and Restricted Cash		0.0
Cash, Cash Equivalents and Restricted Cash at Beginning of Period		0.0
Cash, Cash Equivalents and Restricted Cash at End of Period		$ 0.0