Moody's (MCO) 10-Q 23 Oct 24 2024 Q3 Quarterly report Financial data

Cover Page

Cover Page shares in Millions	9 Months Ended
	Sep. 30, 2024 shares
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2024
Document Transition Report	false
Entity File Number	1-14037
Entity Registrant Name	Moody’s Corporation
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	13-3998945
Entity Address, Address Line One	7 World Trade Center at 250 Greenwich Street
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10007
City Area Code	(212)
Local Phone Number	553-0300
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)	181.2
Entity Central Index Key	0001059556
Document Fiscal Period Focus	Q3
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2024
Common Stock, par value $0.01 per share
Entity Information [Line Items]
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	MCO
Security Exchange Name	NYSE
1.75% Senior Notes Due 2027
Entity Information [Line Items]
Title of 12(b) Security	1.75% Senior Notes Due 2027
Trading Symbol	MCO 27
Security Exchange Name	NYSE
0.950% Senior Notes Due 2030
Entity Information [Line Items]
Title of 12(b) Security	0.950% Senior Notes Due 2030
Trading Symbol	MCO 30
Security Exchange Name	NYSE

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Income Statement [Abstract]
Revenue	$ 1,813	$ 1,472	$ 5,416	$ 4,436
Expenses
Operating	512	412	1,448	1,266
Selling, general, and administrative	434	403	1,293	1,204
Depreciation and amortization	108	95	318	276
Restructuring	6	27	13	51
Charges related to asset abandonment	15	0	30	0
Total expenses	1,075	937	3,102	2,797
Operating income	738	535	2,314	1,639
Non-operating (expense) income, net
Interest expense, net	(60)	(66)	(185)	(185)
Other non-operating income, net	25	18	45	31
Total non-operating (expense) income, net	(35)	(48)	(140)	(154)
Income before provision for income taxes	703	487	2,174	1,485
Provision for income taxes	169	97	510	217
Net Income	534	390	1,664	1,268
Less: Net income attributable to noncontrolling interests	0	1	1	1
Net income attributable to Moody's	$ 534	$ 389	$ 1,663	$ 1,267
Earnings per share attributable to Moody's common shareholders
Basic (in usd per share)	$ 2.94	$ 2.12	$ 9.13	$ 6.91
Diluted (in usd per share)	$ 2.93	$ 2.11	$ 9.09	$ 6.88
Weighted average number of shares outstanding
Basic (in shares)	181.7	183.3	182.2	183.4
Diluted (in shares)	182.5	184	183	184.1

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Net Income	$ 534	$ 390	$ 1,664	$ 1,268
Foreign Currency Adjustments:
Foreign currency translation adjustments - Pre Tax	252	(174)	98	(14)
Foreign currency translation adjustments - Tax	(3)	(2)	(3)	(4)
Foreign currency translation adjustments - Net of Tax	249	(176)	95	(18)
Net (losses) gains on net investment hedges - Pre Tax	(184)	124	(40)	11
Net (losses) gains on net investment hedges - Tax	48	(31)	10	(3)
Net (losses) gains on net investment hedges - Net of Tax	(136)	93	(30)	8
Cash Flow Hedges:
Reclassification of (gains) losses included in net income - Pre Tax	1	1	2	2
Reclassification of (gains) losses included in net income - Tax	0	0	0	(1)
Reclassification of (gains) losses included in net income - Net of Tax	1	1	2	1
Pension and Other Retirement Benefits:
Amortization of actuarial gains and prior service credits included in net income - Pre Tax	0	(1)	(1)	(3)
Amortization of actuarial gains and prior service credits included in net income, tax expense (benefit)	0	0	0	1
Amortization of actuarial gains and prior service credits included in net income	0	(1)	(1)	(2)
Net actuarial (losses) gains - Pre Tax	0	2	(3)	2
Net actuarial (losses) gains - Tax	0	(1)	1	(1)
Net actuarial (losses) gains - Net of Tax	0	1	(2)	1
Total other comprehensive income (loss) - Pre Tax	69	(48)	56	(2)
Total other comprehensive income (loss) - Tax	45	(34)	8	(8)
Total other comprehensive (loss) income - Net of Tax	114	(82)	64	(10)
Comprehensive income			1,728	1,258
Less: comprehensive income attributable to noncontrolling interests			0	(1)
Comprehensive Income Attributable to Moody's	$ 648	$ 308	$ 1,728	$ 1,259

CONSOLIDATED BALANCE SHEETS (UN

CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 2,642	$ 2,130
Short-term investments	573	63
Accounts receivable, net of allowance for credit losses of $35 in 2024 and $35 in 2023	1,708	1,659
Other current assets	470	489
Total current assets	5,393	4,341
Property and equipment, net of accumulated depreciation of $1,442 in 2024 and $1,272 in 2023	662	603
Operating lease right-of-use assets	242	277
Goodwill	6,148	5,956
Intangible assets, net	1,970	2,049
Deferred tax assets, net	268	258
Other assets	1,086	1,138
Total assets	15,769	14,622
Current liabilities:
Accounts payable and accrued liabilities	1,133	1,076
Current portion of operating lease liabilities	109	108
Current portion of long-term debt	693	0
Deferred revenue	1,300	1,316
Total current liabilities	3,235	2,500
Non-current portion of deferred revenue	59	65
Long-term debt	6,876	7,001
Deferred tax liabilities, net	416	402
Uncertain tax positions	209	196
Operating lease liabilities	245	306
Other liabilities	661	676
Total liabilities	11,701	11,146
Contingencies
Shareholders' equity:
Preferred stock, par value $0.01 per share; 10,000,000 shares authorized; no shares issued and outstanding	0	0
Capital surplus	1,390	1,228
Retained earnings	15,855	14,659
Treasury stock, at cost; 161,671,601 and 160,430,754 shares of common stock at September 30, 2024 and December 31, 2023, respectively	(12,840)	(12,005)
Accumulated other comprehensive loss	(503)	(567)
Total Moody's shareholders' equity	3,905	3,318
Noncontrolling interests	163	158
Total shareholders' equity	4,068	3,476
Total liabilities, noncontrolling interests and shareholders' equity	15,769	14,622
Series Common Stock
Shareholders' equity:
Common stock	0	0
Non Series Common Stock
Shareholders' equity:
Common stock	$ 3	$ 3

CONSOLIDATED BALANCE SHEETS (_2

CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Accounts receivable, allowances	$ 35	$ 35
Accumulated depreciation, property and equipment	$ 1,442	$ 1,272
Preferred stock, par value (in usd per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Treasury stock, shares (in shares)	161,671,601	160,430,754
Series Common Stock
Common stock, par value (in usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	10,000,000	10,000,000
Common stock, shares issued (in shares)	0	0
Common stock, shares outstanding (in shares)	0	0
Non Series Common Stock
Common stock, par value (in usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	1,000,000,000	1,000,000,000
Common stock, shares issued (in shares)	342,902,272	342,902,272

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Cash flows from operating activities
Net Income	$ 1,664	$ 1,268
Reconciliation of net income to net cash provided by operating activities:
Depreciation and amortization	318	276
Stock-based compensation	166	143
Deferred income taxes	9	(10)
Asset impairment and abandonment-related charges	15	12
Provision for credit losses on accounts receivable	14	15
Gain on previously held equity method investments	(7)	0
Changes in assets and liabilities:
Accounts receivable	(43)	112
Other current assets	25	151
Other assets	(1)	(31)
Lease obligations	(24)	(16)
Accounts payable and accrued liabilities	45	(61)
Deferred revenue	(51)	(35)
Uncertain tax positions and other non-current tax liabilities	12	(114)
Other liabilities	22	(36)
Net cash provided by operating activities	2,164	1,674
Cash flows from investing activities
Capital additions	(243)	(198)
Purchases of investments	(623)	(105)
Sales and maturities of investments	105	115
Purchases of investments in non-consolidated affiliates	(4)	(3)
Sales of investments in non-consolidated affiliates	0	1
Cash paid for acquisitions, net of cash acquired	(110)	(3)
Net cash used in investing activities	(875)	(193)
Cash flows from financing activities
Repayment of notes	0	(500)
Issuance of notes	496	0
Proceeds from stock-based compensation plans	60	40
Treasury shares	(812)	(278)
Repurchase of shares related to stock-based compensation	(85)	(67)
Dividends	(465)	(424)
Dividends to noncontrolling interests	(1)	(2)
Debt issuance costs and related fees	(5)	0
Net cash used in financing activities	(812)	(1,231)
Effect of exchange rate changes on cash and cash equivalents	35	(13)
Increase in cash and cash equivalents	512	237
Cash and cash equivalents, beginning of period	2,130	1,769
Cash and cash equivalents, end of period	$ 2,642	$ 2,006

CONSOLIDATED STATEMENT OF SHARE

CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Millions	Total	Total Moody's Shareholders' Equity	Common Stock	Capital Surplus	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Loss	Non- Controlling Interests
Common stock, shares issued beginning balance (in shares) at Dec. 31, 2022			342,900,000
Treasury stock, common, beginning balance (shares) at Dec. 31, 2022						(159,700,000)
Beginning Balance at Dec. 31, 2022	$ 2,689	$ 2,519	$ 3	$ 1,054	$ 13,618	$ (11,513)	$ (643)	$ 170
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	1,268	1,267			1,267			1
Dividends	(434)	(425)			(425)			(9)
Stock-based compensation	143	143		143
Shares issued for stock-based compensation plans at average cost, net	(24)	(24)		(22)		$ (2)
Shares issued for stock-based compensation plans at average cost, net (in shares)						700,000
Treasury shares repurchased, inclusive of excise tax	(280)	(280)		0		$ (280)
Treasury shares repurchased, inclusive of excise tax (in shares)						(900,000)
Currency translation adjustment, net of net investment hedge activity (net of tax)	(10)	(9)					(9)	(1)
Net actuarial gains (losses) and prior service costs (net of tax)	1	1					1
Amortization of actuarial gains and prior service credits	(2)	(2)					(2)
Amortization of losses on cash flow hedges	1	1					1
Common stock, shares issued ending balance (in shares) at Sep. 30, 2023			342,900,000
Treasury stock, common, ending balance (shares) at Sep. 30, 2023						(159,900,000)
Ending Balance at Sep. 30, 2023	3,352	3,191	$ 3	1,175	14,460	$ (11,795)	(652)	161
Common stock, shares issued beginning balance (in shares) at Jun. 30, 2023			342,900,000
Treasury stock, common, beginning balance (shares) at Jun. 30, 2023						(159,400,000)
Beginning Balance at Jun. 30, 2023	3,312	3,144	$ 3	1,124	14,213	$ (11,626)	(570)	168
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	390	389			389			1
Dividends	(150)	(142)			(142)			(8)
Stock-based compensation	46	46		46
Shares issued for stock-based compensation plans at average cost, net	7	7		5		$ 2
Shares issued for stock-based compensation plans at average cost, net (in shares)						0
Treasury shares repurchased, inclusive of excise tax	(171)	(171)		0		$ (171)
Treasury shares repurchased, inclusive of excise tax (in shares)						(500,000)
Currency translation adjustment, net of net investment hedge activity (net of tax)	(83)	(83)					(83)	0
Net actuarial gains (losses) and prior service costs (net of tax)	1	1					1
Amortization of actuarial gains and prior service credits	(1)	(1)					(1)
Amortization of losses on cash flow hedges	1	1					1
Common stock, shares issued ending balance (in shares) at Sep. 30, 2023			342,900,000
Treasury stock, common, ending balance (shares) at Sep. 30, 2023						(159,900,000)
Ending Balance at Sep. 30, 2023	$ 3,352	3,191	$ 3	1,175	14,460	$ (11,795)	(652)	161
Common stock, shares issued beginning balance (in shares) at Dec. 31, 2023			342,900,000
Treasury stock, common, beginning balance (shares) at Dec. 31, 2023	(160,430,754)					(160,400,000)
Beginning Balance at Dec. 31, 2023	$ 3,476	3,318	$ 3	1,228	14,659	$ (12,005)	(567)	158
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	1,664	1,663			1,663			1
Dividends	(473)	(467)			(467)			(6)
Stock-based compensation	169	169		169
Shares issued for stock-based compensation plans at average cost, net	(25)	(25)		(7)		$ (18)
Shares issued for stock-based compensation plans at average cost, net (in shares)						600,000
Noncontrolling interest resulting from majority acquisition	10	0						10
Treasury shares repurchased, inclusive of excise tax	(817)	(817)		0		$ (817)
Treasury shares repurchased, inclusive of excise tax (in shares)						(1,900,000)
Currency translation adjustment, net of net investment hedge activity (net of tax)	65	65					65	0
Net actuarial gains (losses) and prior service costs (net of tax)	(2)	(2)					(2)
Amortization of actuarial gains and prior service credits	(1)	(1)					(1)
Amortization of losses on cash flow hedges	$ 2	2					2
Common stock, shares issued ending balance (in shares) at Sep. 30, 2024			342,900,000
Treasury stock, common, ending balance (shares) at Sep. 30, 2024	(161,671,601)					(161,700,000)
Ending Balance at Sep. 30, 2024	$ 4,068	3,905	$ 3	1,390	15,855	$ (12,840)	(503)	163
Common stock, shares issued beginning balance (in shares) at Jun. 30, 2024			342,900,000
Treasury stock, common, beginning balance (shares) at Jun. 30, 2024						(160,800,000)
Beginning Balance at Jun. 30, 2024	3,938	3,778	$ 3	1,324	15,478	$ (12,410)	(617)	160
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	534	534			534			0
Dividends	(162)	(157)			(157)			(5)
Stock-based compensation	58	58		58
Shares issued for stock-based compensation plans at average cost, net	12	12		8		$ 4
Shares issued for stock-based compensation plans at average cost, net (in shares)						0
Noncontrolling interest resulting from majority acquisition	8	0						8
Treasury shares repurchased, inclusive of excise tax	(434)	(434)				$ (434)
Treasury shares repurchased, inclusive of excise tax (in shares)						(900,000)
Currency translation adjustment, net of net investment hedge activity (net of tax)	113	113					113	0
Net actuarial gains (losses) and prior service costs (net of tax)	0
Amortization of actuarial gains and prior service credits	0
Amortization of losses on cash flow hedges	$ 1	1					1
Common stock, shares issued ending balance (in shares) at Sep. 30, 2024			342,900,000
Treasury stock, common, ending balance (shares) at Sep. 30, 2024	(161,671,601)					(161,700,000)
Ending Balance at Sep. 30, 2024	$ 4,068	$ 3,905	$ 3	$ 1,390	$ 15,855	$ (12,840)	$ (503)	$ 163

CONSOLIDATED STATEMENT OF SHA_2

CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY (UNAUDITED) (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Stockholders' Equity [Abstract]
Dividends (in usd per share)	$ 0.85	$ 0.77	$ 2.55	$ 2.31
Currency translation adjustment, net of net investment hedge activity, tax expense (benefit)	$ (45)	$ 33	$ (7)	$ 7
Net actuarial gains and prior service cost, tax expense (benefit)	0	(1)	1	(1)
Amortization of actuarial gains and prior service credits included in net income, tax expense (benefit)	$ 0	$ 0	$ 0	(1)
Amortization of losses on cash flow hedges - Tax				$ 1

DESCRIPTION OF BUSINESS AND BAS

DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION	9 Months Ended
	Sep. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION	DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION Moody’s is a global integrated risk assessment firm that empowers organizations to anticipate, adapt and thrive in a new era of exponential risk. Our data, analytical solutions and insights help decision-makers identify opportunities and manage the risks of doing business with others. Moody’s reports in two reportable segments: MA and MIS. MA is a global provider of: i) decision solutions; ii) research and insights; and iii) data and information, which help companies make better and faster decisions. MA leverages its unique assets and specialized industry knowledge across multiple risks such as credit, market, financial crime, supply chain, catastrophe and climate to deliver integrated risk assessment solutions that enable business leaders to identify, measure and manage the implications of interrelated risks and opportunities. MIS publishes credit ratings and provides assessment services on a wide range of debt obligations, programs and facilities, and the entities that issue such obligations in markets worldwide, including various corporate, financial institution and governmental obligations, and structured finance securities. These interim financial statements have been prepared in accordance with the instructions to Form 10-Q and should be read in conjunction with the Company’s consolidated financial statements and related notes in the Company’s 2023 annual report on Form 10-K filed with the SEC on February 14, 2024. The results of interim periods are not necessarily indicative of results for the full year or any subsequent period. In the opinion of management, all adjustments (including normal recurring accruals) considered necessary for a fair presentation of financial position, results of operations and cash flows at the dates and for the periods presented have been included. The year-end consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by GAAP. Certain reclassifications have been made to prior period amounts to conform to the current presentation. Recently Issued Accounting Standards In November 2023, the FASB issued ASU 2023-07, "Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures" ("ASU No. 2023-07"), which expands segment disclosure requirements for public entities. ASU No. 2023-07 will require entities to disclose significant segment expenses by reportable segment if they are regularly provided to the CODM and included in each reported measure of segment profit or loss. In addition, this ASU permits entities to disclose more than one measure of segment profit or loss used by the CODM. Additionally, disclosure of the CODM’s title and position will be required on an annual basis, as well as an explanation of how the CODM uses the reported measure(s). Furthermore, all existing annual disclosures about segment profit or loss and assets must be provided on an interim basis in addition to disclosure of significant segment expenses and other segment items. This ASU is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024, and requires retrospective application to all prior periods presented in the financial statements. The Company will adopt this ASU in its Form 10-K for the year ended December 31, 2024 and will provide the aforementioned new required disclosures, including further disaggregation of each segment's operating and SG&A expenses. In December 2023, the FASB issued ASU 2023-09, "Income Taxes (Topic 740): Improvements to Income Tax Disclosures" ("ASU No. 2023-09"), which is intended to enhance the transparency and decision usefulness of income tax disclosures. The amendments in ASU No. 2023-09 require entities to disclose additional income tax information, primarily related to greater disaggregation of the entity's ETR reconciliation and income taxes paid by jurisdiction disclosures. This ASU is effective for annual periods beginning after December 15, 2024, and should be applied on a prospective basis; however, retrospective application is permitted. The Company is currently evaluating the impact of adopting this ASU on its consolidated financial statements and disclosures. Reclassification of Previously Reported Revenue by LOB In the first quarter of 2024, pursuant to the integration of RMS into the Company's order-to-cash systems, the Company reclassified certain prior year revenue by geography disclosures. The impact of the reclassification was not material and prior year revenue disclosures have been reclassified to conform to this new presentation, which is disclosed in Note 2.

REVENUES

REVENUES	9 Months Ended
	Sep. 30, 2024
Revenue from Contract with Customer [Abstract]
REVENUES	REVENUES Revenue by Category The following table presents the Company’s revenues disaggregated by LOB: Three Months Ended September 30, Nine Months Ended 2024 2023 2024 2023 MA: Decision Solutions (DS) Banking $ 140 $ 136 $ 405 $ 390 Insurance 148 138 439 404 KYC 95 80 270 228 Total DS 383 354 1,114 1,022 Research and Insights (R&I) 235 222 683 654 Data and Information (D&I) 213 200 635 584 Total external revenue 831 776 2,432 2,260 Intersegment revenue 3 3 10 10 Total MA 834 779 2,442 2,270 MIS: Corporate Finance (CFG) Investment-grade 149 63 416 272 High-yield 80 38 232 116 Bank loans 120 82 422 209 Other accounts (1) 166 163 499 470 Total CFG 515 346 1,569 1,067 Structured Finance (SFG) Asset-backed securities 34 30 101 89 RMBS 24 22 73 72 CMBS 27 17 66 45 Structured credit 49 32 138 95 Other accounts 1 1 2 2 Total SFG 135 102 380 303 Financial Institutions (FIG) Banking 108 92 344 289 Insurance 46 24 166 92 Managed investments 13 7 40 23 Other accounts 3 3 10 9 Total FIG 170 126 560 413 Public, Project and Infrastructure Finance (PPIF) Public finance / sovereign 61 49 187 155 Project and infrastructure 93 66 262 216 Total PPIF 154 115 449 371 Total ratings revenue 974 689 2,958 2,154 MIS Other 8 7 26 22 Total external revenue 982 696 2,984 2,176 Intersegment revenue 48 47 144 138 Total MIS 1,030 743 3,128 2,314 Eliminations (51) (50) (154) (148) Total MCO $ 1,813 $ 1,472 $ 5,416 $ 4,436 (1) Other includes: recurring monitoring fees of a rated debt obligation and/or entities that issue such obligations as well as fees from programs such as commercial paper, medium term notes, and ICRA corporate finance revenue. The following table presents the Company’s revenues disaggregated by LOB and geographic area: Three Months Ended September 30, 2024 Three Months Ended September 30, 2023 U.S. Non-U.S Total U.S. Non-U.S Total MA: Decision Solutions $ 144 $ 239 $ 383 $ 141 $ 213 $ 354 Research and Insights 128 107 235 124 98 222 Data and Information 74 139 213 69 131 200 Total MA 346 485 831 334 442 776 MIS: Corporate Finance 364 151 515 242 104 346 Structured Finance 98 37 135 65 37 102 Financial Institutions 90 80 170 52 74 126 Public, Project and Infrastructure Finance 100 54 154 69 46 115 Total ratings revenue 652 322 974 428 261 689 MIS Other 1 7 8 — 7 7 Total MIS 653 329 982 428 268 696 Total MCO $ 999 $ 814 $ 1,813 $ 762 $ 710 $ 1,472 Nine Months Ended September 30, 2024 Nine Months Ended September 30, 2023 U.S. Non-U.S Total U.S. Non-U.S Total MA: Decision Solutions $ 420 $ 694 $ 1,114 $ 406 $ 616 $ 1,022 Research and Insights 374 309 683 361 293 654 Data and Information 227 408 635 204 380 584 Total MA 1,021 1,411 2,432 971 1,289 2,260 MIS: Corporate Finance 1,078 491 1,569 727 340 1,067 Structured Finance 266 114 380 186 117 303 Financial Institutions 292 268 560 188 225 413 Public, Project and Infrastructure Finance 284 165 449 228 143 371 Total ratings revenue 1,920 1,038 2,958 1,329 825 2,154 MIS Other 1 25 26 — 22 22 Total MIS 1,921 1,063 2,984 1,329 847 2,176 Total MCO $ 2,942 $ 2,474 $ 5,416 $ 2,300 $ 2,136 $ 4,436 The following table presents the Company’s reportable segment revenues disaggregated by segment and geographic region: Three Months Ended September 30, Nine Months Ended 2024 2023 2024 2023 MA: U.S. $ 346 $ 334 $ 1,021 $ 971 Non-U.S.: EMEA 334 310 969 895 Asia-Pacific 84 76 251 224 Americas 67 56 191 170 Total Non-U.S. 485 442 1,411 1,289 Total MA 831 776 2,432 2,260 MIS: U.S. 653 428 1,921 1,329 Non-U.S.: EMEA 212 155 685 509 Asia-Pacific 73 67 225 213 Americas 44 46 153 125 Total Non-U.S. 329 268 1,063 847 Total MIS 982 696 2,984 2,176 Total MCO $ 1,813 $ 1,472 $ 5,416 $ 4,436 The following table summarizes the split between Transaction Revenue and Recurring Revenue: Three Months Ended September 30, 2024 2023 Transaction Recurring Total Transaction Recurring Total Decision Solutions $ 33 $ 350 $ 383 $ 43 $ 311 $ 354 9 % 91 % 100 % 12 % 88 % 100 % Research and Insights $ 4 $ 231 $ 235 $ 4 $ 218 $ 222 2 % 98 % 100 % 2 % 98 % 100 % Data and Information $ 1 $ 212 $ 213 $ 1 $ 199 $ 200 — % 100 % 100 % 1 % 99 % 100 % Total MA (1) $ 38 $ 793 $ 831 $ 48 $ 728 $ 776 5 % 95 % 100 % 6 % 94 % 100 % Corporate Finance $ 382 $ 133 $ 515 $ 216 $ 130 $ 346 74 % 26 % 100 % 62 % 38 % 100 % Structured Finance $ 78 $ 57 $ 135 $ 49 $ 53 $ 102 58 % 42 % 100 % 48 % 52 % 100 % Financial Institutions $ 92 $ 78 $ 170 $ 52 $ 74 $ 126 54 % 46 % 100 % 41 % 59 % 100 % Public, Project and Infrastructure Finance $ 109 $ 45 $ 154 $ 70 $ 45 $ 115 71 % 29 % 100 % 61 % 39 % 100 % MIS Other $ 2 $ 6 $ 8 $ 2 $ 5 $ 7 25 % 75 % 100 % 29 % 71 % 100 % Total MIS $ 663 $ 319 $ 982 $ 389 $ 307 $ 696 68 % 32 % 100 % 56 % 44 % 100 % Total Moody's Corporation $ 701 $ 1,112 $ 1,813 $ 437 $ 1,035 $ 1,472 39 % 61 % 100 % 30 % 70 % 100 % Nine Months Ended September 30, 2024 2023 Transaction Recurring Total Transaction Recurring Total Decision Solutions $ 105 $ 1,009 $ 1,114 $ 126 $ 896 $ 1,022 9 % 91 % 100 % 12 % 88 % 100 % Research and Insights $ 11 $ 672 $ 683 $ 12 $ 642 $ 654 2 % 98 % 100 % 2 % 98 % 100 % Data and Information $ 3 $ 632 $ 635 $ 2 $ 582 $ 584 — % 100 % 100 % — % 100 % 100 % Total MA (1) $ 119 $ 2,313 $ 2,432 $ 140 $ 2,120 $ 2,260 5 % 95 % 100 % 6 % 94 % 100 % Corporate Finance $ 1,169 $ 400 $ 1,569 $ 682 $ 385 $ 1,067 75 % 25 % 100 % 64 % 36 % 100 % Structured Finance $ 213 $ 167 $ 380 $ 142 $ 161 $ 303 56 % 44 % 100 % 47 % 53 % 100 % Financial Institutions $ 329 $ 231 $ 560 $ 195 $ 218 $ 413 59 % 41 % 100 % 47 % 53 % 100 % Public, Project and Infrastructure Finance $ 315 $ 134 $ 449 $ 240 $ 131 $ 371 70 % 30 % 100 % 65 % 35 % 100 % MIS Other $ 6 $ 20 $ 26 $ 4 $ 18 $ 22 23 % 77 % 100 % 18 % 82 % 100 % Total MIS $ 2,032 $ 952 $ 2,984 $ 1,263 $ 913 $ 2,176 68 % 32 % 100 % 58 % 42 % 100 % Total Moody's Corporation $ 2,151 $ 3,265 $ 5,416 $ 1,403 $ 3,033 $ 4,436 40 % 60 % 100 % 32 % 68 % 100 % (1) Revenue from software implementation services and risk management advisory projects, while classified by management as transactional revenue, is recognized over time under GAAP. The following table presents the timing of revenue recognition: Three Months Ended September 30, 2024 Nine Months Ended September 30, 2024 MA MIS Total MA MIS Total Revenue recognized at a point in time $ 26 $ 663 $ 689 $ 65 $ 2,032 $ 2,097 Revenue recognized over time 805 319 1,124 2,367 952 3,319 Total $ 831 $ 982 $ 1,813 $ 2,432 $ 2,984 $ 5,416 Three Months Ended September 30, 2023 Nine Months Ended September 30, 2023 MA MIS Total MA MIS Total Revenue recognized at a point in time $ 24 $ 389 $ 413 $ 73 $ 1,263 $ 1,336 Revenue recognized over time 752 307 1,059 2,187 913 3,100 Total $ 776 $ 696 $ 1,472 $ 2,260 $ 2,176 $ 4,436 Unbilled receivables, deferred revenue and remaining performance obligations Unbilled receivables For certain MA arrangements, the timing of when the Company has the unconditional right to consideration and recognizes revenue occurs prior to invoicing the customer. In addition, certain MIS arrangements contain contractual terms whereby the customers are billed in arrears for annual monitoring services, requiring revenue to be accrued as an unbilled receivable as such services are provided. The following table presents the Company's unbilled receivables, which are included within accounts receivable, net, at September 30, 2024 and December 31, 2023: As of September 30, 2024 As of December 31, 2023 MA MIS MA MIS Unbilled Receivables $ 119 $ 470 $ 119 $ 415 Deferred revenue The Company recognizes deferred revenue when a contract requires a customer to pay consideration to the Company in advance of when revenue related to that contract is recognized. This deferred revenue is relieved when the Company satisfies the related performance obligation and revenue is recognized. Significant changes in the deferred revenue balances during the three and nine months ended September 30, 2024 and 2023 are as follows: Three Months Ended September 30, 2024 Three Months Ended September 30, 2023 MA MIS Total MA MIS Total Balance at June 30, $ 1,146 $ 336 $ 1,482 $ 1,116 $ 336 $ 1,452 Changes in deferred revenue Revenue recognized that was included in the deferred revenue balance at the beginning of the period (551) (120) (671) (513) (113) (626) Increases due to amounts billable excluding amounts recognized as revenue during the period 410 92 502 410 82 492 Increases due to acquisitions during the period 5 — 5 — — — Effect of exchange rate changes 37 4 41 (25) (2) (27) Total changes in deferred revenue (99) (24) (123) (128) (33) (161) Balance at September 30, $ 1,047 $ 312 $ 1,359 $ 988 $ 303 $ 1,291 Nine Months Ended September 30, 2024 Nine Months Ended September 30, 2023 MA MIS Total MA MIS Total Balance at December 31, $ 1,111 $ 270 $ 1,381 $ 1,055 $ 278 $ 1,333 Changes in deferred revenue Revenue recognized that was included in the deferred revenue balance at the beginning of the period (950) (197) (1,147) (969) (192) (1,161) Increases due to amounts billable excluding amounts recognized as revenue during the period 860 238 1,098 908 218 1,126 Increases due to acquisitions during the period 5 — 5 — — — Effect of exchange rate changes 21 1 22 (6) (1) (7) Total changes in deferred revenue (64) 42 (22) (67) 25 (42) Balance at September 30, $ 1,047 $ 312 $ 1,359 $ 988 $ 303 $ 1,291 Deferred revenue - current $ 1,047 $ 253 $ 1,300 $ 986 $ 240 $ 1,226 Deferred revenue - non-current $ — $ 59 $ 59 $ 2 $ 63 $ 65 For the MA segment, the decrease in deferred revenue for the three months ended September 30, 2024 and 2023 was primarily due to the recognition of annual subscription and maintenance billings from December and January. For the nine months ended September 30, 2024 and 2023, the decrease in the deferred revenue balance is attributable to recognition of revenues related to the aforementioned December billings being mostly offset by the impact of the high concentration of billings in the first quarter. For the MIS segment, the change in the deferred revenue balance for all periods presented was primarily related to the significant portion of contract renewals that occur during the first quarter and are generally recognized over a one year period. Remaining performance obligation Remaining performance obligations in the MA segment include both amounts recorded as deferred revenue on the balance sheet as of September 30, 2024 as well as amounts not yet invoiced to customers as of September 30, 2024, largely reflecting future revenue related to signed multi-year arrangements for hosted and installed subscription-based products. As of September 30, 2024, the aggregate amount of the transaction price allocated to remaining performance obligations was approximately $3.5 billion. The Company expects to recognize into revenue approximately 60% of this balance within one year, approximately 25% of this balance between one Remaining performance obligations in the MIS segment largely reflect deferred revenue related to monitoring fees for certain structured finance products, primarily CMBS, where the issuers can elect to pay the monitoring fees for the life of the security in advance. As of September 30, 2024, the aggregate amount of the transaction price allocated to remaining performance obligations was approximately $97 million. The Company expects to recognize into revenue approximately 25% of this balance within one year, approximately 50% of this balance between one

STOCK-BASED COMPENSATION

STOCK-BASED COMPENSATION	9 Months Ended
	Sep. 30, 2024
Share-Based Payment Arrangement, Noncash Expense [Abstract]
STOCK-BASED COMPENSATION	STOCK-BASED COMPENSATION Presented below is a summary of the stock-based compensation cost and associated tax benefit included in the accompanying consolidated statements of operations: Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 Stock-based compensation cost $ 57 $ 46 $ 166 $ 143 Tax benefit $ 12 $ 10 $ 36 $ 32 During the first nine months of 2024, the Company granted 0.2 million employee stock options, which had a weighted average grant date fair value of $120.42 per share. The Company also granted 0.5 million shares of restricted stock in the first nine months of 2024, which had a weighted average grant date fair value of $372.64 per share. Both the employee stock options and restricted stock generally vest ratably over four years. Additionally, the Company granted 0.2 million shares of performance-based awards whereby the number of shares that ultimately vest are based on the achievement of certain non-market-based performance metrics of the Company over a period of two The following weighted average assumptions were used in determining the fair value using the Black-Scholes option-pricing model for options granted in 2024: Expected dividend yield 0.91 % Expected stock volatility 28 % Risk-free interest rate 4.34 % Expected holding period 5.9 years Unrecognized stock-based compensation expense at September 30, 2024 was $16 million and $279 million for unvested stock options and restricted stock, respectively, which is expected to be recognized over a weighted average period of 1.8 years and 2.5 years, respectively. Additionally, there was $67 million of unrecognized stock-based compensation expense relating to the aforementioned non-market-based performance-based awards, which is expected to be recognized over a weighted average period of 2.3 years. The following table summarizes information relating to stock option exercises and restricted stock vesting: Nine Months Ended 2024 2023 Exercise of stock options: Proceeds from stock option exercises $ 44 $ 26 Aggregate intrinsic value $ 60 $ 48 Tax benefit realized upon exercise $ 10 $ 11 Number of shares exercised 0.3 0.2 Vesting of restricted stock: Fair value of shares vested $ 183 $ 154 Tax benefit realized upon vesting $ 45 $ 36 Number of shares vested 0.5 0.5 Vesting of performance-based restricted stock: Fair value of shares vested $ 40 $ 24 Tax benefit realized upon vesting $ 9 $ 3 Number of shares vested 0.1 0.1

INCOME TAXES

INCOME TAXES	9 Months Ended
	Sep. 30, 2024
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES Moody’s ETR was 24.0% and 19.9% for the three months ended September 30, 2024 and 2023, respectively. Moody’s ETR for the nine months ended September 30, 2024 and 2023 was 23.5% and 14.6%, respectively. The increase in the ETR for the nine months ended September 30, 2024 compared to the same period in the prior year was primarily due to tax benefits recognized in the first quarter of 2023, which reflect the resolution of uncertain tax positions in various U.S. and non-U.S. tax jurisdictions and will not recur in 2024. The Company’s year-to-date provision for income taxes differs from the tax computed by applying its estimated annual ETR to the pre-tax earnings primarily due to the excess tax benefits from stock-based compensation of $23 million and a change in tax rate of a non-U.S. tax jurisdiction of $7 million. The Company classifies interest related to UTPs in interest expense, net in its consolidated statements of operations. Penalties, if incurred, would be recognized in other non-operating income, net. The Company had a net increase in its UTP reserves of $2 million, net of federal tax, during the third quarter of 2024 and an increase in its UTPs of $13 million, net of federal tax, during the first nine months of 2024. Moody’s is subject to U.S. federal income tax as well as income tax in various state, local and foreign jurisdictions. The tax years 2021 through 2023 remain open to examination. The Company’s New York City tax returns for 2018 through 2022 are currently under examination. The Company’s U.K. tax returns for 2017 through 2022 remain open to examination. For ongoing audits, it is possible the balance of UTPs could decrease in the next twelve months as a result of the settlement of such audits, which might involve the payment of additional taxes, the adjustment of certain deferred taxes and/or the recognition of tax benefits. It is also possible that new issues will be raised by tax authorities which could necessitate increases to the balance of UTPs. As the Company is unable to predict the timing or outcome of these audits, it is unable to estimate the amount of future changes to the balance of UTPs at this time. However, the Company believes that it has adequately provided for its financial exposure relating to all open tax years, by tax jurisdiction, in accordance with the applicable provisions of ASC Topic 740 regarding UTPs. The following table shows the amount the Company paid for income taxes: Nine Months Ended September 30, 2024 2023 Income taxes paid $ 391 $ 213 Effective in 2024, multiple foreign jurisdictions in which the Company operates have enacted legislation to adopt a minimum tax rate described in the Global Anti-Base Erosion tax model rules (referred to as GloBE or Pillar II) issued by the OECD. A minimum ETR of 15% applies to multinational companies with consolidated revenue above €750 million. Under the GloBE rules, a company is required to determine a combined ETR for all entities located in a jurisdiction. If the jurisdictional effective tax rate is less than 15%, an additional tax generally will be due to bring the jurisdictional ETR up to 15%. We have evaluated the impact of the Pillar II global minimum tax rules on our consolidated financial statements and related disclosures. As of September 30, 2024, the Pillar II minimum tax requirement is not expected to have a material impact on our full-year results of operations or financial position.

RECONCILIATION OF WEIGHTED AVER

RECONCILIATION OF WEIGHTED AVERAGE SHARES OUTSTANDING	9 Months Ended
	Sep. 30, 2024
Earnings Per Share [Abstract]
RECONCILIATION OF WEIGHTED AVERAGE SHARES OUTSTANDING	RECONCILIATION OF WEIGHTED AVERAGE SHARES OUTSTANDING Below is a reconciliation of basic to diluted shares outstanding: Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 Basic 181.7 183.3 182.2 183.4 Dilutive effect of shares issuable under stock-based compensation plans 0.8 0.7 0.8 0.7 Diluted 182.5 184.0 183.0 184.1 Anti-dilutive options to purchase common shares and restricted stock as well as contingently issuable restricted stock which are excluded from the table above 0.3 0.4 0.4 0.5 The calculation of basic shares outstanding is based on the weighted average number of shares of common stock outstanding during the reporting period. The calculation of diluted EPS requires certain assumptions regarding the use of both cash proceeds and assumed proceeds that would be received upon the exercise of stock options and vesting of restricted stock outstanding as of September 30, 2024 and 2023.

CASH EQUIVALENTS AND INVESTMENT

CASH EQUIVALENTS AND INVESTMENTS	9 Months Ended
	Sep. 30, 2024
Cash and Cash Equivalents [Abstract]
CASH EQUIVALENTS AND INVESTMENTS	CASH EQUIVALENTS AND INVESTMENTS The table below provides additional information on the Company’s cash equivalents and investments: As of September 30, 2024 Balance sheet location Cost Gains/(Losses) Fair Value Cash and cash equivalents Short-term Other Certificates of deposit and money market deposit accounts/funds (1) $ 1,691 $ — $ 1,691 $ 1,117 $ 573 $ 1 Mutual funds $ 101 $ 11 $ 112 $ — $ — $ 112 As of December 31, 2023 Balance sheet location Cost Gains/(Losses) Fair Value Cash and cash Short-term Other Certificates of deposit and money market deposit accounts/funds (1) $ 1,178 $ — $ 1,178 $ 1,112 $ 63 $ 3 Mutual funds $ 91 $ 6 $ 97 $ — $ — $ 97 (1) Consists of time deposits, money market deposit accounts and money market funds. The remaining contractual maturities for the certificates of deposits classified as short-term investments are one month to 12 months at both September 30, 2024 and December 31, 2023. The remaining contractual maturities for the certificates of deposits classified in other assets are 14 months to 15 months at September 30, 2024 and 14 months at December 31, 2023. Time deposits with a maturity of less than 90 days at time of purchase are classified as cash and cash equivalents. In addition, the Company invested in COLI. As of September 30, 2024 and December 31, 2023, the contract value of the COLI was $49 million and $47 million, respectively.

DERIVATIVE INSTRUMENTS AND HEDG

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES	9 Months Ended
	Sep. 30, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES	DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES The Company is exposed to global market risks, including risks from changes in FX rates and changes in interest rates. Accordingly, the Company uses derivatives in certain instances to manage financial exposures that occur in the normal course of business. The Company does not hold or issue derivatives for speculative purposes. Derivatives and non-derivative instruments designated as accounting hedges: Fair Value Hedges Interest Rate Swaps The Company has entered into interest rate swaps to convert the fixed interest rate on certain of its long-term debt to a floating interest rate based on the SOFR. The purpose of these hedges is to mitigate the risk associated with changes in the fair value of the long-term debt, thus the Company has designated these swaps as fair value hedges. The fair value of the swaps is adjusted quarterly with a corresponding adjustment to the carrying value of the debt. The changes in the fair value of the swaps and the underlying hedged item generally offset and the net cash settlements on the swaps are recorded each period within interest expense, net in the Company’s consolidated statements of operations. The following table summarizes the Company’s interest rate swaps designated as fair value hedges: Notional Amount Hedged Item Nature of Swap As of September 30, 2024 As of December 31, 2023 Floating Interest Rate 2014 Senior Notes due 2044 Pay Floating/Receive Fixed $ 300 $ 300 SOFR 2017 Senior Notes due 2028 Pay Floating/Receive Fixed 500 500 SOFR 2018 Senior Notes due 2029 Pay Floating/Receive Fixed 400 400 SOFR 2018 Senior Notes due 2048 Pay Floating/Receive Fixed 300 300 SOFR 2020 Senior Notes due 2025 Pay Floating/Receive Fixed 300 300 SOFR 2022 Senior Notes due 2052 Pay Floating/Receive Fixed 500 500 SOFR 2022 Senior Notes due 2032 Pay Floating/Receive Fixed 250 250 SOFR Total $ 2,550 $ 2,550 Refer to Note 13 for information on the cumulative amount of fair value hedging adjustments included in the carrying amount of the above hedged items. The following table summarizes the impact to the statements of operations of the Company’s interest rate swaps designated as fair value hedges: Total amounts of financial statement line item presented in the statements of operations in which the effects of fair value hedges are recorded Amount of income/(loss) recognized in the consolidated statements of operations Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 Interest expense, net $ (60) $ (66) $ (185) $ (185) Description Location on Consolidated Statements of Operations Net interest settlements and accruals on interest rate swaps Interest expense, net $ (25) $ (25) $ (74) $ (64) Fair value changes on interest rate swaps Interest expense, net $ 79 $ (35) $ 57 $ (35) Fair value changes on hedged debt Interest expense, net $ (79) $ 35 $ (57) $ 35 Net investment hedges Debt designated as net investment hedges The Company has designated €500 million of the 2015 Senior Notes Due 2027 and €750 million of the 2019 Senior Notes due 2030 as net investment hedges to mitigate FX exposure related to a portion of the Company’s euro net investment in certain foreign subsidiaries against changes in euro/USD exchange rates. These hedges are designated as accounting hedges under the applicable sections of ASC Topic 815 and will end upon the repayment of the notes in 2027 and 2030, respectively, unless terminated early at the discretion of the Company. Cross currency swaps designated as net investment hedges The Company enters into cross-currency swaps to mitigate FX exposure related to a portion of the Company’s euro net investment in certain foreign subsidiaries against changes in euro/USD exchange rates. The following tables provide information on the cross-currency swaps designated as net investment hedges under ASC Topic 815: September 30, 2024 Pay Receive Nature of Swap Notional Amount Weighted Average Interest Rate Notional Amount Weighted Average Interest Rate Pay Fixed/Receive Fixed € 965 2.91% $ 1,014 4.41% Pay Floating/Receive Floating 2,138 Based on ESTR 2,250 Based on SOFR Total € 3,103 $ 3,264 December 31, 2023 Pay Receive Nature of Swap Notional Amount Weighted Average Interest Rate Notional Amount Weighted Average Interest Rate Pay Fixed/Receive Fixed € 765 3.67% $ 800 5.25% Pay Floating/Receive Floating 2,138 Based on ESTR 2,250 Based on SOFR Total € 2,903 $ 3,050 As of September 30, 2024 these hedges will expire and the notional amounts will be settled as follows unless terminated early at the discretion of the Company: Years Ending December 31, Notional Amount (Pay) Notional Amount (Receive) 2026 € 450 $ 500 2027 531 550 2028 588 600 2029 573 614 2031 481 500 2032 480 500 Total € 3,103 $ 3,264 The following table provides information on the gains/(losses) on the Company’s net investment and cash flow hedges: Derivative and Non-Derivative Instruments in Net Investment Hedging Relationships Amount of Gain/(Loss) Recognized in AOCL on Derivative, net of Tax Amount of Loss Reclassified from AOCL into Income, net of Tax Gain Recognized in Income on Derivative (Amount Excluded from Effectiveness Testing) Three Months Ended September 30, Three Months Ended September 30, Three Months Ended September 30, 2024 2023 2024 2023 2024 2023 Cross currency swaps $ (95) $ 63 $ — $ — $ 12 $ 13 Long-term debt (41) 30 — — — — Total net investment hedges $ (136) $ 93 $ — $ — $ 12 $ 13 Derivatives in Cash Flow Hedging Relationships Cross currency swap $ — $ — $ — $ — $ — $ — Interest rate contracts — — (1) (1) — — Total cash flow hedges $ — $ — $ (1) $ (1) $ — $ — Total $ (136) $ 93 $ (1) $ (1) $ 12 $ 13 Derivative and Non-Derivative Instruments in Net Investment Hedging Relationships Amount of Gain/(Loss) Recognized in AOCL on Derivative, net of Tax Amount of Loss Reclassified from AOCL into Income, net of Tax Gain Recognized in Income on Derivative (Amount Excluded from Effectiveness Testing) Nine Months Ended September 30, Nine Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 2024 2023 Cross currency swaps $ (20) $ — $ — $ — $ 34 $ 43 Long-term debt (10) 8 — — — — Total net investment hedges $ (30) $ 8 $ — $ — $ 34 $ 43 Derivatives in Cash Flow Hedging Relationships Cross currency swaps $ — $ — $ — $ 1 $ — $ — Interest rate contracts — — (2) (2) — — Total cash flow hedges $ — $ — $ (2) $ (1) $ — $ — Total $ (30) $ 8 $ (2) $ (1) $ 34 $ 43 The cumulative amount of net investment hedge and cash flow hedge gains (losses) remaining in AOCL is as follows: Cumulative Gains/(Losses), net of tax September 30, 2024 December 31, 2023 Net investment hedges Cross currency swaps $ 1 $ 21 FX forwards 29 29 Long-term debt (7) 3 Total net investment hedges $ 23 $ 53 Cash flow hedges Interest rate contracts $ (43) $ (45) Cross currency swaps 1 1 Total cash flow hedges (42) (44) Total net gain in AOCL $ (19) $ 9 Derivatives not designated as accounting hedges: Foreign exchange forwards The Company also enters into foreign exchange forward contracts to mitigate the change in fair value on certain assets and liabilities denominated in currencies other than a subsidiary’s functional currency. These forward contracts are not designated as accounting hedges under the applicable sections of ASC Topic 815. Accordingly, changes in the fair value of these contracts are recognized immediately in other non-operating income, net, in the Company’s consolidated statements of operations along with the FX gain or loss recognized on the assets and liabilities denominated in a currency other than the subsidiary’s functional currency. These contracts have expiration dates at various times through July 2025. The following table summarizes the notional amounts of the Company’s outstanding foreign exchange forwards: September 30, 2024 December 31, 2023 Notional amount of currency pair (1) : Sell Buy Sell Buy Contracts to sell USD for GBP $ 567 £ 435 $ 513 £ 407 Contracts to sell USD for JPY $ 29 ¥ 4,000 $ 14 ¥ 2,000 Contracts to sell USD for CAD $ 52 C$ 70 $ 147 C$ 200 Contracts to sell USD for SGD $ 69 S$ 90 $ 50 S$ 67 Contracts to sell USD for EUR $ — € — $ 60 € 55 Contracts to sell USD for INR $ 23 ₹ 1,900 $ 23 ₹ 1,900 Contracts to sell EUR for USD € 15 $ 17 € — $ — Contracts to sell USD for AUD $ — A$ — $ 5 A$ 8 Contracts to sell CAD for USD C$ — $ — C$ 25 $ 19 (1) € = euro, £ = British pound, S$ = Singapore dollar, $ = U.S. dollar, ¥ = Japanese yen, C$ = Canadian dollar, ₹= Indian Rupee, A$ = Australian dollar Total Return Swaps The Company has entered into total return swaps to mitigate market-driven changes in the value of certain liabilities associated with the Company's deferred compensation plans. The fair value of these swaps at September 30, 2024 and related gains in the three and nine months ended September 30, 2024 were not material. The notional amount of the total return swaps as of September 30, 2024 and December 31, 2023 was $65 million and $58 million, respectively. The following table summarizes the impact to the consolidated statements of operations relating to the gains (losses) on the Company’s derivatives which are not designated as hedging instruments: Derivatives not designated as accounting hedges Location on Consolidated Statements of Operations Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 FX forwards Other non-operating income, net $ 39 $ (25) $ 21 $ (10) Total return swaps Operating expense $ 1 $ (2) $ 5 $ (2) Total return swaps SG&A expense $ 1 $ (1) $ 2 $ (1) The table below shows the classification between assets and liabilities on the Company’s consolidated balance sheets for the fair value of the derivative instrument as well as the carrying value of its non-derivative debt instruments designated and qualifying as net investment hedges: Derivative and Non-Derivative Instruments Balance Sheet Location September 30, 2024 December 31, 2023 Assets: Derivatives designated as accounting hedges: Cross-currency swaps designated as net investment hedges Other assets $ — $ 3 Derivatives not designated as accounting hedges: FX forwards on certain assets and liabilities Other current assets 17 13 Total assets $ 17 $ 16 Liabilities: Derivatives designated as accounting hedges: Interest rate swaps designated as fair value hedges Accounts payable and accrued liabilities $ 6 $ — Cross-currency swaps designated as net investment hedges Other liabilities 207 183 Interest rate swaps designated as fair value hedges Other liabilities 120 183 Total derivatives designated as accounting hedges 333 366 Non-derivatives designated as accounting hedges: Long-term debt designated as net investment hedge Long-term debt 1,395 1,381 Total liabilities $ 1,728 $ 1,747

GOODWILL AND OTHER ACQUIRED INT

GOODWILL AND OTHER ACQUIRED INTANGIBLE ASSETS	9 Months Ended
	Sep. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL AND OTHER ACQUIRED INTANGIBLE ASSETS	GOODWILL AND OTHER ACQUIRED INTANGIBLE ASSETS The following table summarizes the activity in goodwill for the periods indicated: Nine Months Ended September 30, 2024 MA MIS Consolidated Gross goodwill Accumulated Net Gross goodwill Accumulated impairment Net Gross goodwill Accumulated Net Balance at beginning $ 5,681 $ (12) $ 5,669 $ 287 $ — $ 287 $ 5,968 $ (12) $ 5,956 Additions/ adjustments (1) 39 — 39 98 — 98 137 — 137 Foreign currency translation adjustments 54 — 54 1 — 1 55 — 55 Ending balance $ 5,774 $ (12) $ 5,762 $ 386 $ — $ 386 $ 6,160 $ (12) $ 6,148 Year Ended December 31, 2023 MA MIS Consolidated Gross goodwill Accumulated impairment charge Net goodwill Gross goodwill Accumulated impairment charge Net goodwill Gross goodwill Accumulated impairment charge Net goodwill Balance at beginning $ 5,474 $ (12) $ 5,462 $ 377 $ — $ 377 $ 5,851 $ (12) $ 5,839 Additions/ adjustments (2) 90 — 90 (87) — (87) 3 — 3 Foreign currency translation 117 — 117 (3) — (3) 114 — 114 Ending balance $ 5,681 $ (12) $ 5,669 $ 287 $ — $ 287 $ 5,968 $ (12) $ 5,956 (1) The 2024 additions/adjustments primarily relate to certain immaterial acquisitions in 2024 (most notably GCR and Praedicat in the third quarter of 2024). (2) The 2023 additions/adjustments primarily relate to a reallocation of goodwill pursuant to a realignment of certain components of the Company's ESG business in the first quarter of 2023. Acquired intangible assets and related amortization consisted of: September 30, December 31, Customer relationships $ 2,109 $ 2,065 Accumulated amortization (634) (556) Net customer relationships 1,475 1,509 Software/product technology 691 674 Accumulated amortization (420) (364) Net software/product technology 271 310 Database 179 179 Accumulated amortization (97) (82) Net database 82 97 Trade names 207 199 Accumulated amortization (83) (72) Net trade names 124 127 Other (1) 66 52 Accumulated amortization (48) (46) Net other 18 6 Total acquired intangible assets, net $ 1,970 $ 2,049 (1) Other intangible assets primarily consist of trade secrets, covenants not to compete, and acquired ratings methodologies and models. Amortization expense relating to acquired intangible assets is as follows: Three Months Ended September 30, Nine Months Ended 2024 2023 2024 2023 Amortization expense $ 51 $ 49 $ 148 $ 150

RESTRUCTURING

RESTRUCTURING	9 Months Ended
	Sep. 30, 2024
Restructuring and Related Activities [Abstract]
RESTRUCTURING	RESTRUCTURING On June 30, 2022, the chief executive officer of Moody’s approved the 2022 - 2023 Geolocation Restructuring Program. T he Company estimates that the program will result in annualized savings of $145 million to $165 million per year. This program related to the Company's post-COVID-19 geolocation strategy and other strategic initiatives and included the rationalization and exit of certain leased office spaces and a reduction in staff, including the relocation of certain job functions. Cumulative charges related to this program are shown in the table below. The savings generated from the 2022 - 2023 Geolocation Restructuring Program will strengthen the Company's operating margin, with a portion being deployed to support strategic investments, including the Company's workplace of the future program and employee retention initiatives. The 2022 - 2023 Geolocation Restructuring Program was substantially completed at the end of 2023. Cash outlays associated with this program, which primarily relate to personnel-related costs, are expected to be $145 million to $155 million, substantially all of which are expected to be paid by the end of 2024. Total expense included in the accompanying consolidated statements of operations relating to the aforementioned restructuring program is below: 2022 - 2023 Geolocation Restructuring Program Three months ended September 30, Nine months ended September 30, Cumulative expense incurred 2024 2023 2024 2023 Employee Termination Costs $ 6 $ 17 $ 13 $ 39 $ 149 Real Estate Related Costs — 10 — 12 63 Other Costs — — — — 1 Total Restructuring $ 6 $ 27 $ 13 $ 51 $ 213 The restructuring liability for the aforementioned plan was not material at September 30, 2024.

FAIR VALUE

FAIR VALUE	9 Months Ended
	Sep. 30, 2024
Fair Value Disclosures [Abstract]
FAIR VALUE	FAIR VALUE The tables below present information about items that are carried at fair value at September 30, 2024 and December 31, 2023: Fair Value Measurement as of September 30, 2024 Description Balance Level 1 Level 2 Assets: Derivatives (1) $ 17 $ — $ 17 Money market funds/mutual funds 122 122 — Total $ 139 $ 122 $ 17 Liabilities: Derivatives (1) $ 333 $ — $ 333 Total $ 333 $ — $ 333 Fair Value Measurement as of December 31, 2023 Description Balance Level 1 Level 2 Assets: Derivatives (1) $ 16 $ — $ 16 Money market funds/mutual funds 107 107 — Total $ 123 $ 107 $ 16 Liabilities: Derivatives (1) $ 366 $ — $ 366 Total $ 366 $ — $ 366 (1) Represents fair value of certain derivative contracts as more fully described in Note 7 to the consolidated financial statements. The following are descriptions of the methodologies utilized by the Company to estimate the fair value of its derivative contracts, money market mutual funds and mutual funds: Derivatives: In determining the fair value of the derivative contracts in the table above, the Company utilizes industry standard valuation models. Where applicable, these models project future cash flows and discount the future amounts to a present value using spot rates, forward points, currency volatilities, interest rates as well as the risk of non-performance of the Company and the counterparties with whom it has derivative contracts. The Company established strict counterparty credit guidelines and only enters into transactions with financial institutions that adhere to these guidelines. Accordingly, the risk of counterparty default is deemed to be minimal. Money market funds and mutual funds: The mutual funds in the table above are deemed to be equity securities with readily determinable fair values with changes in the fair value recognized through net income under ASC Topic 321. The fair value of these instruments is determined using Level 1 inputs as defined in the ASC Topic 820.

OTHER BALANCE SHEET AND STATEME

OTHER BALANCE SHEET AND STATEMENTS OF OPERATIONS INFORMATION	9 Months Ended
	Sep. 30, 2024
Other Balance Sheet And Statement Of Operations Information [Abstract]
OTHER BALANCE SHEET AND STATEMENTS OF OPERATIONS INFORMATION	OTHER BALANCE SHEET AND STATEMENTS OF OPERATIONS INFORMATION The following tables contain additional detail related to certain balance sheet captions: September 30, 2024 December 31, 2023 Other current assets: Prepaid taxes $ 73 $ 115 Prepaid expenses 168 133 Capitalized costs to obtain and fulfill sales contracts 118 116 Foreign exchange forwards on certain assets and liabilities 17 13 Interest receivable on interest rate and cross currency swaps 51 79 Other 43 33 Total other current assets $ 470 $ 489 Other assets: Investments in non-consolidated affiliates $ 467 $ 521 Deposits for real-estate leases 16 16 Indemnification assets related to acquisitions 112 111 Mutual funds, certificates of deposit and money market deposit accounts/funds 113 100 Company owned life insurance (at contract value) 49 47 Capitalized costs to obtain sales contracts 202 196 Derivative instruments designated as accounting hedges — 3 Pension and other retirement employee benefits 41 41 Other 86 103 Total other assets $ 1,086 $ 1,138 Accounts payable and accrued liabilities: Salaries and benefits $ 130 $ 130 Incentive compensation 321 345 Customer credits, advanced payments and advanced billings 136 105 Dividends 17 7 Professional service fees 56 46 Interest accrued on debt 52 83 Accounts payable 50 23 Income taxes 156 108 Pension and other retirement employee benefits 15 15 Accrued royalties 18 24 Restructuring liability 12 35 Derivative instruments designated as accounting hedges 6 — Interest payable on interest rate and cross currency swaps 52 67 Other 112 88 Total accounts payable and accrued liabilities $ 1,133 $ 1,076 September 30, 2024 December 31, 2023 Other liabilities: Pension and other retirement employee benefits $ 199 $ 190 Interest accrued on UTPs 45 36 MAKS indemnification provisions 19 19 Income tax liability - non-current portion 12 15 Derivative instruments designated as accounting hedges 327 366 Other 59 50 Total other liabilities $ 661 $ 676 Investments in non-consolidated affiliates: The following table provides additional detail regarding Moody's investments in non-consolidated affiliates, as included in other assets in the consolidated balance sheets: September 30, 2024 December 31, 2023 Equity method investments (1) $ 131 $ 186 Investments measured using the measurement alternative (2) 327 327 Other 9 8 Total investments in non-consolidated affiliates $ 467 $ 521 (1) Equity securities in which the Company has significant influence over the investee but does not have a controlling financial interest in accordance with ASC Topic 323. (2) Equity securities without readily determinable fair value for which the Company has elected to apply the measurement alternative in accordance with ASC Topic 321. Moody's holds various investments accounted for under the equity method, the most significant of which is the Company's minority investment in CCXI. Moody's also holds various investments measured using the measurement alternative, the most significant of which is the Company's minority interest in BitSight. Earnings from non-consolidated affiliates, which are included within other non-operating income, net, are disclosed within the table below. Other non-operating income, net: The following table summarizes the components of other non-operating income, net: Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 FX (loss) gain (1) $ — $ 2 $ (7) $ (29) Net periodic pension income - non-service and non-interest cost components 9 8 25 26 Income from investments in non-consolidated affiliates 8 9 10 12 Gain on previously held equity method investments (2) 7 — 7 — Gain on investments 4 — 12 11 Other (3) (3) (1) (2) 11 Total $ 25 $ 18 $ 45 $ 31 (1) The amount for the nine months ended September 30, 2023 includes a $23 million loss recorded pursuant to an immaterial out-of-period adjustment relating to the 2022 fiscal year. (2) The amounts for the three and nine months ended September 30, 2024 reflect non-cash gains relating to the step-acquisitions of Praedicat and GCR. (3) The amount for the nine months ended September 30, 2023 includes a benefit of $9 million related to the favorable resolutions of various tax matters. Charges related to asset abandonment: During the nine months ended September 30, 2024, the Company recorded charges related to asset abandonment of $30 million. Costs of $15 million were recorded in the second quarter of 2024 related to severance incurred pursuant to a reduction in staff due to the Company's decision to outsource the production of certain sustainability content utilized in our product offerings. Additionally, the Company has reduced the estimated useful lives of certain internally developed software and amortizable intangible assets that are associated with the sustainability content offerings for which production is being outsourced. During the third quarter of 2024, the Company incurred $15 million in incremental amortization expense related to the change in estimated useful lives of these assets and expects to incur an additional $15 million of incremental amortization expense in the fourth quarter of 2024.

COMPREHENSIVE INCOME AND ACCUMU

COMPREHENSIVE INCOME AND ACCUMULATED OTHER COMPREHENSIVE LOSS	9 Months Ended
	Sep. 30, 2024
Equity [Abstract]
COMPREHENSIVE INCOME AND ACCUMULATED OTHER COMPREHENSIVE LOSS	COMPREHENSIVE INCOME AND ACCUMULATED OTHER COMPREHENSIVE LOSS The following tables show changes in AOCL by component (net of tax): Three Months Ended September 30, 2024 2023 Gains/(Losses) Pension and Other Retirement Benefits Cash Flow Hedges Foreign Currency Translation Adjustments Net Investment Hedges Total Pension and Other Retirement Benefits Cash Flow Hedges Foreign Currency Translation Adjustments Net Investment Hedges Total Balance at June 30, $ (59) $ (43) $ (674) $ 159 $ (617) $ (48) $ (45) $ (577) $ 100 $ (570) Other comprehensive income/(loss) before reclassifications — — 249 (136) 113 1 — (176) 93 (82) Amounts reclassified from AOCL — 1 — — 1 (1) 1 — — — Other comprehensive income/(loss) — 1 249 (136) 114 — 1 (176) 93 (82) Balance at September 30, $ (59) $ (42) $ (425) $ 23 $ (503) $ (48) $ (44) $ (753) $ 193 $ (652) Nine Months Ended September 30, 2024 2023 Gains/(Losses) Pension and Other Retirement Benefits Cash Flow Hedges Foreign Currency Translation Adjustments Net Investment Hedges Total Pension and Other Retirement Benefits Cash Flow Hedges Foreign Currency Translation Adjustments Net Investment Hedges Total Balance at December 31, $ (56) $ (44) $ (520) $ 53 $ (567) $ (47) $ (45) $ (736) $ 185 $ (643) Other comprehensive (loss)/income before reclassifications (2) — 95 (30) 63 1 — (17) 8 (8) Amounts reclassified from AOCL (1) 2 — — 1 (2) 1 — — (1) Other comprehensive (loss)/income (3) 2 95 (30) 64 (1) 1 (17) 8 (9) Balance at September 30, $ (59) $ (42) $ (425) $ 23 $ (503) $ (48) $ (44) $ (753) $ 193 $ (652)

INDEBTEDNESS

INDEBTEDNESS	9 Months Ended
	Sep. 30, 2024
Debt Disclosure [Abstract]
INDEBTEDNESS	INDEBTEDNESS The Company’s debt is recorded at its carrying value, which represents the issuance amount plus or minus any issuance premium or discount, except for certain debt as depicted in the table below, which is recorded at the carrying value adjusted for the fair value of an interest rate swap used to hedge the fair value of the note. The following table summarizes total indebtedness: September 30, 2024 Notes Payable: Principal Amount Fair Value of Interest Rate Swaps (1) Unamortized (Discount) Premium Unamortized Debt Issuance Costs Carrying Value 5.25% 2014 Senior Notes, due 2044 $ 600 $ (26) $ 3 $ (4) $ 573 1.75% 2015 Senior Notes, due 2027 558 — — (1) 557 3.25% 2017 Senior Notes, due 2028 500 (14) (2) (1) 483 4.25% 2018 Senior Notes, due 2029 400 (25) (1) (1) 373 4.875% 2018 Senior Notes, due 2048 400 (29) (6) (3) 362 0.950% 2019 Senior Notes, due 2030 837 — (2) (3) 832 3.75% 2020 Senior Notes, due 2025 700 (6) — (1) 693 3.25% 2020 Senior Notes, due 2050 300 — (4) (3) 293 2.55% 2020 Senior Notes, due 2060 300 — (2) (3) 295 2.00% 2021 Senior Notes, due 2031 600 — (6) (4) 590 2.75% 2021 Senior Notes, due 2041 600 — (12) (5) 583 3.10% 2021 Senior Notes, due 2061 500 — (7) (5) 488 3.75% 2022 Senior Notes, due 2052 500 (21) (8) (5) 466 4.25% 2022 Senior Notes, due 2032 500 (5) (2) (3) 490 5.00% 2024 Senior Notes, due 2034 500 — (4) (5) 491 Total debt $ 7,795 $ (126) $ (53) $ (47) $ 7,569 Current portion (693) Total long-term debt $ 6,876 December 31, 2023 Notes Payable: Principal Amount Fair Value of Interest Rate Swaps (1) Unamortized (Discount) Premium Unamortized Debt Issuance Costs Carrying Value 5.25% 2014 Senior Notes, due 2044 $ 600 $ (34) $ 3 $ (4) $ 565 1.75% 2015 Senior Notes, due 2027 552 — — (1) 551 3.25% 2017 Senior Notes, due 2028 500 (26) (2) (2) 470 4.25% 2018 Senior Notes, due 2029 400 (34) (2) (2) 362 4.875% 2018 Senior Notes, due 2048 400 (36) (6) (3) 355 0.950% 2019 Senior Notes, due 2030 829 — (2) (4) 823 3.75% 2020 Senior Notes, due 2025 700 (16) (1) (1) 682 3.25% 2020 Senior Notes, due 2050 300 — (4) (3) 293 2.55% 2020 Senior Notes, due 2060 300 — (2) (3) 295 2.00% 2021 Senior Notes, due 2031 600 — (6) (4) 590 2.75% 2021 Senior Notes, due 2041 600 — (12) (5) 583 3.10% 2021 Senior Notes, due 2061 500 — (7) (5) 488 3.75% 2022 Senior Notes, due 2052 500 (29) (8) (5) 458 4.25% 2022 Senior Notes, due 2032 500 (8) (2) (4) 486 Total long-term debt $ 7,281 $ (183) $ (51) $ (46) $ 7,001 (1) The fair value of interest rate swaps in the tables above represents the cumulative amount of fair value hedging adjustments included in the carrying value of the hedged debt. Notes Payable At September 30, 2024, the Company was in compliance with all covenants contained within all of the debt agreements. All of the debt agreements contain cross default provisions which state that default under one of the aforementioned debt instruments could in turn permit lenders under other debt instruments to declare borrowings outstanding under those instruments to be immediately due and payable. As of September 30, 2024, there were no such cross defaults. The repayment schedule for the Company’s borrowings is as follows: Year Ending December 31, Year Ending Total 2024 (After September 30,) $ — 2025 700 2026 — 2027 558 2028 500 Thereafter 6,037 Total $ 7,795 Interest expense, net The following table summarizes the components of interest as presented in the consolidated statements of operations and the cash paid for interest: Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 Income $ 28 $ 19 $ 73 $ 44 Expense on borrowings (1) (79) (75) (227) (220) (Expense) income on UTPs and other tax related liabilities (2) (3) (4) (12) 10 Net periodic pension costs - interest component (6) (6) (19) (19) Interest expense, net $ (60) $ (66) $ (185) $ (185) Interest paid (3) $ 83 $ 87 $ 234 $ 230 (1) Expense on borrowings includes interest on long-term debt, as well as realized gains/losses related to interest rate swaps and cross currency swaps, which are more fully discussed in Note 7. (2) The amount for the nine months ended September 30, 2023 includes a $22 million reduction of tax-related interest expense primarily related to the resolutions of tax matters. (3) Interest paid includes net settlements on interest rate swaps, which are more fully discussed in Note 7. The fair value and carrying value of the Company’s debt as of September 30, 2024 and December 31, 2023 are as follows: September 30, 2024 December 31, 2023 Carrying Value Estimated Fair Value Carrying Value Estimated Fair Value Total debt $ 7,569 $ 7,066 $ 7,001 $ 6,402 The fair value of the Company’s debt is estimated based on quoted prices in active markets as of the reporting date, which are considered Level 1 inputs within the fair value hierarchy.

LEASES

LEASES	9 Months Ended
	Sep. 30, 2024
Leases [Abstract]
LEASES	LEASES The Company has operating leases, substantially all of which relate to the lease of office space. The Company’s leases which are classified as finance leases are not material to the consolidated financial statements. Certain of the Company’s leases include options to renew, with renewal terms that can extend the lease term from one year to 20 years at the Company’s discretion. The following table presents the components of the Company’s lease cost: Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 Operating lease cost $ 23 $ 23 $ 66 $ 70 Sublease income (1) (1) (5) (5) Variable lease cost 5 6 16 16 Total lease cost $ 27 $ 28 $ 77 $ 81 The following tables present other information related to the Company’s operating leases: Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 Cash paid for amounts included in the measurement of operating lease liabilities $ 31 $ 30 $ 90 $ 90 Right-of-use assets obtained in exchange for new operating lease liabilities $ 15 $ 1 $ 20 $ 25 September 30, 2024 September 30, 2023 Weighted-average remaining lease term 4.0 years 4.6 years Weighted-average discount rate applied to operating leases 3.2 % 3.2 % The following table presents a maturity analysis of the future minimum lease payments included within the Company’s operating lease liabilities at September 30, 2024: Year Ending December 31, Operating Leases 2024 (After September 30,) $ 30 2025 113 2026 93 2027 75 2028 24 After 2028 41 Total lease payments (undiscounted) 376 Less: Interest 22 Present value of lease liabilities: $ 354 Lease liabilities - current $ 109 Lease liabilities - noncurrent $ 245

CONTINGENCIES

CONTINGENCIES	9 Months Ended
	Sep. 30, 2024
Commitments and Contingencies Disclosure [Abstract]
CONTINGENCIES	CONTINGENCIES Given the nature of the Company's activities, Moody’s and its subsidiaries are subject to legal and tax proceedings, governmental, regulatory and legislative investigations, subpoenas and other inquiries, and claims and litigation by governmental and private parties that are based on ratings assigned by MIS or that are otherwise incidental to the Company’s business. Moody’s and MIS also are subject to periodic reviews, inspections, examinations and investigations by regulators in the U.S. and other jurisdictions, any of which may result in claims, legal proceedings, assessments, fines, penalties or restrictions on business activities. On September 3, 2024, MIS settled charges by the SEC for failure to comply with record preservation requirements applicable to MIS. The settlement followed an investigation relating to certain business communications sent over electronic messaging channels that had not been approved by MIS. The SEC has settled similar charges with other NRSROs and other registrants subject to record preservation requirements. The terms of MIS's settlement included the payment of a $20 million civil monetary penalty. As previously disclosed in the Company's Form 10-Q's this year, the Company had accrued that amount in its consolidated financial statements in prior periods. Moody’s also is subject to ongoing tax audits as addressed in Note 4 to the consolidated financial statements. Management periodically assesses the Company’s liabilities and contingencies in connection with these matters based upon the latest information available. For claims, litigation and proceedings and governmental investigations and inquiries not related to income taxes, the Company records liabilities in the consolidated financial statements when it is both probable that a liability has been incurred and the amount of loss can be reasonably estimated and periodically adjusts these as appropriate. When the reasonable estimate of the loss is within a range of amounts, the minimum amount of the range is accrued unless some higher amount within the range is a better estimate than another amount within the range. In instances when a loss is reasonably possible but uncertainties exist related to the probable outcome and/or the amount or range of loss, management does not record a liability but discloses the contingency if material. As additional information becomes available, the Company adjusts its assessments and estimates of such matters accordingly. Moody’s also discloses material pending legal proceedings pursuant to SEC rules and other pending matters as it may determine to be appropriate. In view of the inherent difficulty of assessing the potential outcome of legal proceedings, governmental, regulatory and legislative investigations and inquiries, claims and litigation and similar matters and contingencies, particularly when the claimants seek large or indeterminate damages or assert novel legal theories or the matters involve a large number of parties, the Company often cannot predict what the eventual outcome of the pending matters will be or the timing of any resolution of such matters. The Company also may be unable to predict the impact (if any) that any such matters may have on how its business is conducted, on its competitive position or on its financial position, results of operations or cash flows. As the process to resolve any pending matters progresses, management will continue to review the latest information available and assess its ability to predict the outcome of such matters and the effects, if any, on its operations and financial condition and to accrue for and disclose such matters as and when required. However, because such matters are inherently unpredictable and unfavorable developments or resolutions can occur, the ultimate outcome of such matters, including the amount of any loss, may differ from those estimates.

SEGMENT INFORMATION

SEGMENT INFORMATION	9 Months Ended
	Sep. 30, 2024
Segment Reporting [Abstract]
SEGMENT INFORMATION	SEGMENT INFORMATION The Company is organized into two operating segments: MA and MIS and accordingly, the Company reports in two reportable segments: MA and MIS. Revenue for MA and expenses for MIS include an intersegment fee charged to MIS from MA for certain MA products and services utilized in MIS’s ratings process. Additionally, revenue for MIS and expenses for MA include intersegment fees charged to MA for the rights to use and distribute content, data and products developed by MIS. These intersegment fees are generally based on the market value of the products and services being transferred between the segments. Overhead expenses include costs such as rent and occupancy, information technology and support staff such as finance, human resources and legal. Such costs and corporate expenses that exclusively benefit one segment are fully charged to that segment. For overhead costs and corporate expenses that benefit both segments, costs are allocated to each segment based on the segment’s share of full-year 2018 actual revenue which comprises a “Baseline Pool” established in 2019, which will remain fixed over time. In subsequent periods, incremental overhead costs (or reductions thereof) will be allocated to each segment based on the prevailing shares of total revenue represented by each segment. “Eliminations” in the following table represent intersegment revenue/expense. Moody’s does not report the Company’s assets by reportable segment, as this metric is not used by the CODM to allocate resources to the segments. Consequently, it is not practical to show assets by reportable segment. Financial Information by Segment The table below shows revenue and Adjusted Operating Income by reportable segment. Adjusted Operating Income is a financial metric utilized by the Company’s CODM to assess the profitability of each reportable segment. Refer to Note 2 for further details on the components of the Company’s revenue. Three Months Ended September 30, 2024 2023 MA MIS Eliminations Consolidated MA MIS Eliminations Consolidated Total external revenue $ 831 $ 982 $ — $ 1,813 $ 776 $ 696 $ — $ 1,472 Intersegment revenue 3 48 (51) — 3 47 (50) — Revenue 834 1,030 (51) 1,813 779 743 (50) 1,472 Operating, SG&A 581 416 (51) 946 517 348 (50) 815 Adjusted Operating Income $ 253 $ 614 $ — $ 867 $ 262 $ 395 $ — $ 657 Add: Depreciation and 88 20 — 108 76 19 — 95 Restructuring 4 2 — 6 22 5 — 27 Charges related to asset abandonment 15 — — 15 — — — — Operating Income $ 738 $ 535 Nine Months Ended September 30, 2024 2023 MA MIS Eliminations Consolidated MA MIS Eliminations Consolidated Total external revenue $ 2,432 $ 2,984 $ — $ 5,416 $ 2,260 $ 2,176 $ — $ 4,436 Intersegment revenue 10 144 (154) — 10 138 (148) — Revenue 2,442 3,128 (154) 5,416 2,270 2,314 (148) 4,436 Operating, SG&A 1,721 1,174 (154) 2,741 1,584 1,034 (148) 2,470 Adjusted Operating Income $ 721 $ 1,954 $ — $ 2,675 $ 686 $ 1,280 $ — $ 1,966 Add: Depreciation and amortization 260 58 — 318 220 56 — 276 Restructuring 7 6 — 13 38 13 — 51 Charges related to asset abandonment 30 — — 30 — — — — Operating Income $ 2,314 $ 1,639 The table below shows cumulative restructuring expense incurred through September 30, 2024 by reportable segment. MA MIS Total 2022 - 2023 Geolocation Restructuring Program $ 115 $ 98 $ 213 The 2022 - 2023 Geolocation Restructuring Program is more fully discussed in Note 9. Consolidated Revenue Information by Geographic Area Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 United States $ 999 $ 762 $ 2,942 $ 2,300 Non-U.S.: EMEA 546 465 1,654 1,404 Asia-Pacific 157 143 476 437 Americas 111 102 344 295 Total Non-U.S. 814 710 2,474 2,136 Total $ 1,813 $ 1,472 $ 5,416 $ 4,436

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Pay vs Performance Disclosure
Net Income (Loss)	$ 534	$ 389	$ 1,663	$ 1,267

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended	9 Months Ended
	Sep. 30, 2024 shares	Sep. 30, 2024 shares
Trading Arrangements, by Individual
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false
Robert Fauber [Member]
Trading Arrangements, by Individual
Material Terms of Trading Arrangement		On July 30, 2024, Robert Fauber, the Company's Chief Executive Officer, adopted a trading plan intended to satisfy Rule 10b5-1(c). The plan relates to the sale of up to 17,191 shares of Moody’s Corporation common stock between November 1, 2024 and October 27, 2025. The shares include: i) shares which will be acquired upon the exercise of employee stock options; and ii) vested restricted stock units.
Name	Robert Fauber
Title	Chief Executive Officer
Rule 10b5-1 Arrangement Adopted	true
Adoption Date	July 30, 2024
Expiration Date	October 27, 2025
Arrangement Duration	360 days
Aggregate Available	17,191	17,191

Description of Business and B_2

Description of Business and Basis of Presentation - (Policies)	9 Months Ended
	Sep. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Recently Issued Accounting Standards	Recently Issued Accounting Standards In November 2023, the FASB issued ASU 2023-07, "Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures" ("ASU No. 2023-07"), which expands segment disclosure requirements for public entities. ASU No. 2023-07 will require entities to disclose significant segment expenses by reportable segment if they are regularly provided to the CODM and included in each reported measure of segment profit or loss. In addition, this ASU permits entities to disclose more than one measure of segment profit or loss used by the CODM. Additionally, disclosure of the CODM’s title and position will be required on an annual basis, as well as an explanation of how the CODM uses the reported measure(s). Furthermore, all existing annual disclosures about segment profit or loss and assets must be provided on an interim basis in addition to disclosure of significant segment expenses and other segment items. This ASU is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024, and requires retrospective application to all prior periods presented in the financial statements. The Company will adopt this ASU in its Form 10-K for the year ended December 31, 2024 and will provide the aforementioned new required disclosures, including further disaggregation of each segment's operating and SG&A expenses. In December 2023, the FASB issued ASU 2023-09, "Income Taxes (Topic 740): Improvements to Income Tax Disclosures" ("ASU No. 2023-09"), which is intended to enhance the transparency and decision usefulness of income tax disclosures. The amendments in ASU No. 2023-09 require entities to disclose additional income tax information, primarily related to greater disaggregation of the entity's ETR reconciliation and income taxes paid by jurisdiction disclosures. This ASU is effective for annual periods beginning after December 15, 2024, and should be applied on a prospective basis; however, retrospective application is permitted. The Company is currently evaluating the impact of adopting this ASU on its consolidated financial statements and disclosures. Reclassification of Previously Reported Revenue by LOB In the first quarter of 2024, pursuant to the integration of RMS into the Company's order-to-cash systems, the Company reclassified certain prior year revenue by geography disclosures. The impact of the reclassification was not material and prior year revenue disclosures have been reclassified to conform to this new presentation, which is disclosed in Note 2.

REVENUES (Tables)

REVENUES (Tables)	9 Months Ended
	Sep. 30, 2024
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following table presents the Company’s revenues disaggregated by LOB: Three Months Ended September 30, Nine Months Ended 2024 2023 2024 2023 MA: Decision Solutions (DS) Banking $ 140 $ 136 $ 405 $ 390 Insurance 148 138 439 404 KYC 95 80 270 228 Total DS 383 354 1,114 1,022 Research and Insights (R&I) 235 222 683 654 Data and Information (D&I) 213 200 635 584 Total external revenue 831 776 2,432 2,260 Intersegment revenue 3 3 10 10 Total MA 834 779 2,442 2,270 MIS: Corporate Finance (CFG) Investment-grade 149 63 416 272 High-yield 80 38 232 116 Bank loans 120 82 422 209 Other accounts (1) 166 163 499 470 Total CFG 515 346 1,569 1,067 Structured Finance (SFG) Asset-backed securities 34 30 101 89 RMBS 24 22 73 72 CMBS 27 17 66 45 Structured credit 49 32 138 95 Other accounts 1 1 2 2 Total SFG 135 102 380 303 Financial Institutions (FIG) Banking 108 92 344 289 Insurance 46 24 166 92 Managed investments 13 7 40 23 Other accounts 3 3 10 9 Total FIG 170 126 560 413 Public, Project and Infrastructure Finance (PPIF) Public finance / sovereign 61 49 187 155 Project and infrastructure 93 66 262 216 Total PPIF 154 115 449 371 Total ratings revenue 974 689 2,958 2,154 MIS Other 8 7 26 22 Total external revenue 982 696 2,984 2,176 Intersegment revenue 48 47 144 138 Total MIS 1,030 743 3,128 2,314 Eliminations (51) (50) (154) (148) Total MCO $ 1,813 $ 1,472 $ 5,416 $ 4,436 (1) Other includes: recurring monitoring fees of a rated debt obligation and/or entities that issue such obligations as well as fees from programs such as commercial paper, medium term notes, and ICRA corporate finance revenue. The following table presents the Company’s revenues disaggregated by LOB and geographic area: Three Months Ended September 30, 2024 Three Months Ended September 30, 2023 U.S. Non-U.S Total U.S. Non-U.S Total MA: Decision Solutions $ 144 $ 239 $ 383 $ 141 $ 213 $ 354 Research and Insights 128 107 235 124 98 222 Data and Information 74 139 213 69 131 200 Total MA 346 485 831 334 442 776 MIS: Corporate Finance 364 151 515 242 104 346 Structured Finance 98 37 135 65 37 102 Financial Institutions 90 80 170 52 74 126 Public, Project and Infrastructure Finance 100 54 154 69 46 115 Total ratings revenue 652 322 974 428 261 689 MIS Other 1 7 8 — 7 7 Total MIS 653 329 982 428 268 696 Total MCO $ 999 $ 814 $ 1,813 $ 762 $ 710 $ 1,472 Nine Months Ended September 30, 2024 Nine Months Ended September 30, 2023 U.S. Non-U.S Total U.S. Non-U.S Total MA: Decision Solutions $ 420 $ 694 $ 1,114 $ 406 $ 616 $ 1,022 Research and Insights 374 309 683 361 293 654 Data and Information 227 408 635 204 380 584 Total MA 1,021 1,411 2,432 971 1,289 2,260 MIS: Corporate Finance 1,078 491 1,569 727 340 1,067 Structured Finance 266 114 380 186 117 303 Financial Institutions 292 268 560 188 225 413 Public, Project and Infrastructure Finance 284 165 449 228 143 371 Total ratings revenue 1,920 1,038 2,958 1,329 825 2,154 MIS Other 1 25 26 — 22 22 Total MIS 1,921 1,063 2,984 1,329 847 2,176 Total MCO $ 2,942 $ 2,474 $ 5,416 $ 2,300 $ 2,136 $ 4,436 The following table summarizes the split between Transaction Revenue and Recurring Revenue: Three Months Ended September 30, 2024 2023 Transaction Recurring Total Transaction Recurring Total Decision Solutions $ 33 $ 350 $ 383 $ 43 $ 311 $ 354 9 % 91 % 100 % 12 % 88 % 100 % Research and Insights $ 4 $ 231 $ 235 $ 4 $ 218 $ 222 2 % 98 % 100 % 2 % 98 % 100 % Data and Information $ 1 $ 212 $ 213 $ 1 $ 199 $ 200 — % 100 % 100 % 1 % 99 % 100 % Total MA (1) $ 38 $ 793 $ 831 $ 48 $ 728 $ 776 5 % 95 % 100 % 6 % 94 % 100 % Corporate Finance $ 382 $ 133 $ 515 $ 216 $ 130 $ 346 74 % 26 % 100 % 62 % 38 % 100 % Structured Finance $ 78 $ 57 $ 135 $ 49 $ 53 $ 102 58 % 42 % 100 % 48 % 52 % 100 % Financial Institutions $ 92 $ 78 $ 170 $ 52 $ 74 $ 126 54 % 46 % 100 % 41 % 59 % 100 % Public, Project and Infrastructure Finance $ 109 $ 45 $ 154 $ 70 $ 45 $ 115 71 % 29 % 100 % 61 % 39 % 100 % MIS Other $ 2 $ 6 $ 8 $ 2 $ 5 $ 7 25 % 75 % 100 % 29 % 71 % 100 % Total MIS $ 663 $ 319 $ 982 $ 389 $ 307 $ 696 68 % 32 % 100 % 56 % 44 % 100 % Total Moody's Corporation $ 701 $ 1,112 $ 1,813 $ 437 $ 1,035 $ 1,472 39 % 61 % 100 % 30 % 70 % 100 % Nine Months Ended September 30, 2024 2023 Transaction Recurring Total Transaction Recurring Total Decision Solutions $ 105 $ 1,009 $ 1,114 $ 126 $ 896 $ 1,022 9 % 91 % 100 % 12 % 88 % 100 % Research and Insights $ 11 $ 672 $ 683 $ 12 $ 642 $ 654 2 % 98 % 100 % 2 % 98 % 100 % Data and Information $ 3 $ 632 $ 635 $ 2 $ 582 $ 584 — % 100 % 100 % — % 100 % 100 % Total MA (1) $ 119 $ 2,313 $ 2,432 $ 140 $ 2,120 $ 2,260 5 % 95 % 100 % 6 % 94 % 100 % Corporate Finance $ 1,169 $ 400 $ 1,569 $ 682 $ 385 $ 1,067 75 % 25 % 100 % 64 % 36 % 100 % Structured Finance $ 213 $ 167 $ 380 $ 142 $ 161 $ 303 56 % 44 % 100 % 47 % 53 % 100 % Financial Institutions $ 329 $ 231 $ 560 $ 195 $ 218 $ 413 59 % 41 % 100 % 47 % 53 % 100 % Public, Project and Infrastructure Finance $ 315 $ 134 $ 449 $ 240 $ 131 $ 371 70 % 30 % 100 % 65 % 35 % 100 % MIS Other $ 6 $ 20 $ 26 $ 4 $ 18 $ 22 23 % 77 % 100 % 18 % 82 % 100 % Total MIS $ 2,032 $ 952 $ 2,984 $ 1,263 $ 913 $ 2,176 68 % 32 % 100 % 58 % 42 % 100 % Total Moody's Corporation $ 2,151 $ 3,265 $ 5,416 $ 1,403 $ 3,033 $ 4,436 40 % 60 % 100 % 32 % 68 % 100 % (1) Revenue from software implementation services and risk management advisory projects, while classified by management as transactional revenue, is recognized over time under GAAP. The following table presents the timing of revenue recognition: Three Months Ended September 30, 2024 Nine Months Ended September 30, 2024 MA MIS Total MA MIS Total Revenue recognized at a point in time $ 26 $ 663 $ 689 $ 65 $ 2,032 $ 2,097 Revenue recognized over time 805 319 1,124 2,367 952 3,319 Total $ 831 $ 982 $ 1,813 $ 2,432 $ 2,984 $ 5,416 Three Months Ended September 30, 2023 Nine Months Ended September 30, 2023 MA MIS Total MA MIS Total Revenue recognized at a point in time $ 24 $ 389 $ 413 $ 73 $ 1,263 $ 1,336 Revenue recognized over time 752 307 1,059 2,187 913 3,100 Total $ 776 $ 696 $ 1,472 $ 2,260 $ 2,176 $ 4,436
Company's Reportable Segment Revenues Disaggregated by Segment and Geographic Region	The following table presents the Company’s reportable segment revenues disaggregated by segment and geographic region: Three Months Ended September 30, Nine Months Ended 2024 2023 2024 2023 MA: U.S. $ 346 $ 334 $ 1,021 $ 971 Non-U.S.: EMEA 334 310 969 895 Asia-Pacific 84 76 251 224 Americas 67 56 191 170 Total Non-U.S. 485 442 1,411 1,289 Total MA 831 776 2,432 2,260 MIS: U.S. 653 428 1,921 1,329 Non-U.S.: EMEA 212 155 685 509 Asia-Pacific 73 67 225 213 Americas 44 46 153 125 Total Non-U.S. 329 268 1,063 847 Total MIS 982 696 2,984 2,176 Total MCO $ 1,813 $ 1,472 $ 5,416 $ 4,436 Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 United States $ 999 $ 762 $ 2,942 $ 2,300 Non-U.S.: EMEA 546 465 1,654 1,404 Asia-Pacific 157 143 476 437 Americas 111 102 344 295 Total Non-U.S. 814 710 2,474 2,136 Total $ 1,813 $ 1,472 $ 5,416 $ 4,436
Schedule of Unbilled Receivables	The following table presents the Company's unbilled receivables, which are included within accounts receivable, net, at September 30, 2024 and December 31, 2023: As of September 30, 2024 As of December 31, 2023 MA MIS MA MIS Unbilled Receivables $ 119 $ 470 $ 119 $ 415
Schedule of Changes in the Deferred Revenue Balances	Significant changes in the deferred revenue balances during the three and nine months ended September 30, 2024 and 2023 are as follows: Three Months Ended September 30, 2024 Three Months Ended September 30, 2023 MA MIS Total MA MIS Total Balance at June 30, $ 1,146 $ 336 $ 1,482 $ 1,116 $ 336 $ 1,452 Changes in deferred revenue Revenue recognized that was included in the deferred revenue balance at the beginning of the period (551) (120) (671) (513) (113) (626) Increases due to amounts billable excluding amounts recognized as revenue during the period 410 92 502 410 82 492 Increases due to acquisitions during the period 5 — 5 — — — Effect of exchange rate changes 37 4 41 (25) (2) (27) Total changes in deferred revenue (99) (24) (123) (128) (33) (161) Balance at September 30, $ 1,047 $ 312 $ 1,359 $ 988 $ 303 $ 1,291 Nine Months Ended September 30, 2024 Nine Months Ended September 30, 2023 MA MIS Total MA MIS Total Balance at December 31, $ 1,111 $ 270 $ 1,381 $ 1,055 $ 278 $ 1,333 Changes in deferred revenue Revenue recognized that was included in the deferred revenue balance at the beginning of the period (950) (197) (1,147) (969) (192) (1,161) Increases due to amounts billable excluding amounts recognized as revenue during the period 860 238 1,098 908 218 1,126 Increases due to acquisitions during the period 5 — 5 — — — Effect of exchange rate changes 21 1 22 (6) (1) (7) Total changes in deferred revenue (64) 42 (22) (67) 25 (42) Balance at September 30, $ 1,047 $ 312 $ 1,359 $ 988 $ 303 $ 1,291 Deferred revenue - current $ 1,047 $ 253 $ 1,300 $ 986 $ 240 $ 1,226 Deferred revenue - non-current $ — $ 59 $ 59 $ 2 $ 63 $ 65

STOCK-BASED COMPENSATION (Table

STOCK-BASED COMPENSATION (Tables)	9 Months Ended
	Sep. 30, 2024
Share-Based Payment Arrangement, Noncash Expense [Abstract]
Stock-Based Compensation Cost and Associated Tax Benefit	Presented below is a summary of the stock-based compensation cost and associated tax benefit included in the accompanying consolidated statements of operations: Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 Stock-based compensation cost $ 57 $ 46 $ 166 $ 143 Tax benefit $ 12 $ 10 $ 36 $ 32
Weighted Average Assumptions used in Determining Fair Value for Options Granted	The following weighted average assumptions were used in determining the fair value using the Black-Scholes option-pricing model for options granted in 2024: Expected dividend yield 0.91 % Expected stock volatility 28 % Risk-free interest rate 4.34 % Expected holding period 5.9 years
Stock Option Exercises and Restricted Stock Vesting	The following table summarizes information relating to stock option exercises and restricted stock vesting: Nine Months Ended 2024 2023 Exercise of stock options: Proceeds from stock option exercises $ 44 $ 26 Aggregate intrinsic value $ 60 $ 48 Tax benefit realized upon exercise $ 10 $ 11 Number of shares exercised 0.3 0.2 Vesting of restricted stock: Fair value of shares vested $ 183 $ 154 Tax benefit realized upon vesting $ 45 $ 36 Number of shares vested 0.5 0.5 Vesting of performance-based restricted stock: Fair value of shares vested $ 40 $ 24 Tax benefit realized upon vesting $ 9 $ 3 Number of shares vested 0.1 0.1

INCOME TAXES (Tables)

INCOME TAXES (Tables)	9 Months Ended
	Sep. 30, 2024
Income Tax Disclosure [Abstract]
Income Taxes Paid	The following table shows the amount the Company paid for income taxes: Nine Months Ended September 30, 2024 2023 Income taxes paid $ 391 $ 213

RECONCILIATION OF WEIGHTED AV_2

RECONCILIATION OF WEIGHTED AVERAGE SHARES OUTSTANDING (Tables)	9 Months Ended
	Sep. 30, 2024
Earnings Per Share [Abstract]
Reconciliation of Basic to Diluted Shares Outstanding	Below is a reconciliation of basic to diluted shares outstanding: Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 Basic 181.7 183.3 182.2 183.4 Dilutive effect of shares issuable under stock-based compensation plans 0.8 0.7 0.8 0.7 Diluted 182.5 184.0 183.0 184.1 Anti-dilutive options to purchase common shares and restricted stock as well as contingently issuable restricted stock which are excluded from the table above 0.3 0.4 0.4 0.5

CASH EQUIVALENTS AND INVESTME_2

CASH EQUIVALENTS AND INVESTMENTS (Tables)	9 Months Ended
	Sep. 30, 2024
Cash and Cash Equivalents [Abstract]
Schedule of Cash and Cash Equivalents and Investments	The table below provides additional information on the Company’s cash equivalents and investments: As of September 30, 2024 Balance sheet location Cost Gains/(Losses) Fair Value Cash and cash equivalents Short-term Other Certificates of deposit and money market deposit accounts/funds (1) $ 1,691 $ — $ 1,691 $ 1,117 $ 573 $ 1 Mutual funds $ 101 $ 11 $ 112 $ — $ — $ 112 As of December 31, 2023 Balance sheet location Cost Gains/(Losses) Fair Value Cash and cash Short-term Other Certificates of deposit and money market deposit accounts/funds (1) $ 1,178 $ — $ 1,178 $ 1,112 $ 63 $ 3 Mutual funds $ 91 $ 6 $ 97 $ — $ — $ 97 (1) Consists of time deposits, money market deposit accounts and money market funds. The remaining contractual maturities for the certificates of deposits classified as short-term investments are one month to 12 months at both September 30, 2024 and December 31, 2023. The remaining contractual maturities for the certificates of deposits classified in other assets are 14 months to 15 months at September 30, 2024 and 14 months at December 31, 2023. Time deposits with a maturity of less than 90 days at time of purchase are classified as cash and cash equivalents.

DERIVATIVE INSTRUMENTS AND HE_2

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Tables)	9 Months Ended
	Sep. 30, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments	The following table summarizes the Company’s interest rate swaps designated as fair value hedges: Notional Amount Hedged Item Nature of Swap As of September 30, 2024 As of December 31, 2023 Floating Interest Rate 2014 Senior Notes due 2044 Pay Floating/Receive Fixed $ 300 $ 300 SOFR 2017 Senior Notes due 2028 Pay Floating/Receive Fixed 500 500 SOFR 2018 Senior Notes due 2029 Pay Floating/Receive Fixed 400 400 SOFR 2018 Senior Notes due 2048 Pay Floating/Receive Fixed 300 300 SOFR 2020 Senior Notes due 2025 Pay Floating/Receive Fixed 300 300 SOFR 2022 Senior Notes due 2052 Pay Floating/Receive Fixed 500 500 SOFR 2022 Senior Notes due 2032 Pay Floating/Receive Fixed 250 250 SOFR Total $ 2,550 $ 2,550 September 30, 2024 Pay Receive Nature of Swap Notional Amount Weighted Average Interest Rate Notional Amount Weighted Average Interest Rate Pay Fixed/Receive Fixed € 965 2.91% $ 1,014 4.41% Pay Floating/Receive Floating 2,138 Based on ESTR 2,250 Based on SOFR Total € 3,103 $ 3,264 December 31, 2023 Pay Receive Nature of Swap Notional Amount Weighted Average Interest Rate Notional Amount Weighted Average Interest Rate Pay Fixed/Receive Fixed € 765 3.67% $ 800 5.25% Pay Floating/Receive Floating 2,138 Based on ESTR 2,250 Based on SOFR Total € 2,903 $ 3,050
Gains and Losses on Derivatives Designated as Hedging Instruments	The following table summarizes the impact to the statements of operations of the Company’s interest rate swaps designated as fair value hedges: Total amounts of financial statement line item presented in the statements of operations in which the effects of fair value hedges are recorded Amount of income/(loss) recognized in the consolidated statements of operations Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 Interest expense, net $ (60) $ (66) $ (185) $ (185) Description Location on Consolidated Statements of Operations Net interest settlements and accruals on interest rate swaps Interest expense, net $ (25) $ (25) $ (74) $ (64) Fair value changes on interest rate swaps Interest expense, net $ 79 $ (35) $ 57 $ (35) Fair value changes on hedged debt Interest expense, net $ (79) $ 35 $ (57) $ 35
Schedule of Net Investment Hedges, Notional Amount That Will Be Settled At Expiry	As of September 30, 2024 these hedges will expire and the notional amounts will be settled as follows unless terminated early at the discretion of the Company: Years Ending December 31, Notional Amount (Pay) Notional Amount (Receive) 2026 € 450 $ 500 2027 531 550 2028 588 600 2029 573 614 2031 481 500 2032 480 500 Total € 3,103 $ 3,264
Amount of Gain/(Loss) Recognized in AOCI on Derivative Net Investment Hedging Relationships (Effectiveness Portion)	The following table provides information on the gains/(losses) on the Company’s net investment and cash flow hedges: Derivative and Non-Derivative Instruments in Net Investment Hedging Relationships Amount of Gain/(Loss) Recognized in AOCL on Derivative, net of Tax Amount of Loss Reclassified from AOCL into Income, net of Tax Gain Recognized in Income on Derivative (Amount Excluded from Effectiveness Testing) Three Months Ended September 30, Three Months Ended September 30, Three Months Ended September 30, 2024 2023 2024 2023 2024 2023 Cross currency swaps $ (95) $ 63 $ — $ — $ 12 $ 13 Long-term debt (41) 30 — — — — Total net investment hedges $ (136) $ 93 $ — $ — $ 12 $ 13 Derivatives in Cash Flow Hedging Relationships Cross currency swap $ — $ — $ — $ — $ — $ — Interest rate contracts — — (1) (1) — — Total cash flow hedges $ — $ — $ (1) $ (1) $ — $ — Total $ (136) $ 93 $ (1) $ (1) $ 12 $ 13 Derivative and Non-Derivative Instruments in Net Investment Hedging Relationships Amount of Gain/(Loss) Recognized in AOCL on Derivative, net of Tax Amount of Loss Reclassified from AOCL into Income, net of Tax Gain Recognized in Income on Derivative (Amount Excluded from Effectiveness Testing) Nine Months Ended September 30, Nine Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 2024 2023 Cross currency swaps $ (20) $ — $ — $ — $ 34 $ 43 Long-term debt (10) 8 — — — — Total net investment hedges $ (30) $ 8 $ — $ — $ 34 $ 43 Derivatives in Cash Flow Hedging Relationships Cross currency swaps $ — $ — $ — $ 1 $ — $ — Interest rate contracts — — (2) (2) — — Total cash flow hedges $ — $ — $ (2) $ (1) $ — $ — Total $ (30) $ 8 $ (2) $ (1) $ 34 $ 43
Components of Accumulated Other Comprehensive Income	The cumulative amount of net investment hedge and cash flow hedge gains (losses) remaining in AOCL is as follows: Cumulative Gains/(Losses), net of tax September 30, 2024 December 31, 2023 Net investment hedges Cross currency swaps $ 1 $ 21 FX forwards 29 29 Long-term debt (7) 3 Total net investment hedges $ 23 $ 53 Cash flow hedges Interest rate contracts $ (43) $ (45) Cross currency swaps 1 1 Total cash flow hedges (42) (44) Total net gain in AOCL $ (19) $ 9 The following tables show changes in AOCL by component (net of tax): Three Months Ended September 30, 2024 2023 Gains/(Losses) Pension and Other Retirement Benefits Cash Flow Hedges Foreign Currency Translation Adjustments Net Investment Hedges Total Pension and Other Retirement Benefits Cash Flow Hedges Foreign Currency Translation Adjustments Net Investment Hedges Total Balance at June 30, $ (59) $ (43) $ (674) $ 159 $ (617) $ (48) $ (45) $ (577) $ 100 $ (570) Other comprehensive income/(loss) before reclassifications — — 249 (136) 113 1 — (176) 93 (82) Amounts reclassified from AOCL — 1 — — 1 (1) 1 — — — Other comprehensive income/(loss) — 1 249 (136) 114 — 1 (176) 93 (82) Balance at September 30, $ (59) $ (42) $ (425) $ 23 $ (503) $ (48) $ (44) $ (753) $ 193 $ (652) Nine Months Ended September 30, 2024 2023 Gains/(Losses) Pension and Other Retirement Benefits Cash Flow Hedges Foreign Currency Translation Adjustments Net Investment Hedges Total Pension and Other Retirement Benefits Cash Flow Hedges Foreign Currency Translation Adjustments Net Investment Hedges Total Balance at December 31, $ (56) $ (44) $ (520) $ 53 $ (567) $ (47) $ (45) $ (736) $ 185 $ (643) Other comprehensive (loss)/income before reclassifications (2) — 95 (30) 63 1 — (17) 8 (8) Amounts reclassified from AOCL (1) 2 — — 1 (2) 1 — — (1) Other comprehensive (loss)/income (3) 2 95 (30) 64 (1) 1 (17) 8 (9) Balance at September 30, $ (59) $ (42) $ (425) $ 23 $ (503) $ (48) $ (44) $ (753) $ 193 $ (652)
Summary of Notional Amounts of Outstanding Foreign Exchange Forwards	The following table summarizes the notional amounts of the Company’s outstanding foreign exchange forwards: September 30, 2024 December 31, 2023 Notional amount of currency pair (1) : Sell Buy Sell Buy Contracts to sell USD for GBP $ 567 £ 435 $ 513 £ 407 Contracts to sell USD for JPY $ 29 ¥ 4,000 $ 14 ¥ 2,000 Contracts to sell USD for CAD $ 52 C$ 70 $ 147 C$ 200 Contracts to sell USD for SGD $ 69 S$ 90 $ 50 S$ 67 Contracts to sell USD for EUR $ — € — $ 60 € 55 Contracts to sell USD for INR $ 23 ₹ 1,900 $ 23 ₹ 1,900 Contracts to sell EUR for USD € 15 $ 17 € — $ — Contracts to sell USD for AUD $ — A$ — $ 5 A$ 8 Contracts to sell CAD for USD C$ — $ — C$ 25 $ 19
Gains and Losses Recognized in Consolidated Statement of Operations on Derivatives Not Designated as Hedging instruments	The following table summarizes the impact to the consolidated statements of operations relating to the gains (losses) on the Company’s derivatives which are not designated as hedging instruments: Derivatives not designated as accounting hedges Location on Consolidated Statements of Operations Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 FX forwards Other non-operating income, net $ 39 $ (25) $ 21 $ (10) Total return swaps Operating expense $ 1 $ (2) $ 5 $ (2) Total return swaps SG&A expense $ 1 $ (1) $ 2 $ (1)
Fair Value of Derivative Instruments	The table below shows the classification between assets and liabilities on the Company’s consolidated balance sheets for the fair value of the derivative instrument as well as the carrying value of its non-derivative debt instruments designated and qualifying as net investment hedges: Derivative and Non-Derivative Instruments Balance Sheet Location September 30, 2024 December 31, 2023 Assets: Derivatives designated as accounting hedges: Cross-currency swaps designated as net investment hedges Other assets $ — $ 3 Derivatives not designated as accounting hedges: FX forwards on certain assets and liabilities Other current assets 17 13 Total assets $ 17 $ 16 Liabilities: Derivatives designated as accounting hedges: Interest rate swaps designated as fair value hedges Accounts payable and accrued liabilities $ 6 $ — Cross-currency swaps designated as net investment hedges Other liabilities 207 183 Interest rate swaps designated as fair value hedges Other liabilities 120 183 Total derivatives designated as accounting hedges 333 366 Non-derivatives designated as accounting hedges: Long-term debt designated as net investment hedge Long-term debt 1,395 1,381 Total liabilities $ 1,728 $ 1,747

GOODWILL AND OTHER ACQUIRED I_2

GOODWILL AND OTHER ACQUIRED INTANGIBLE ASSETS (Tables)	9 Months Ended
	Sep. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Activity in Goodwill	The following table summarizes the activity in goodwill for the periods indicated: Nine Months Ended September 30, 2024 MA MIS Consolidated Gross goodwill Accumulated Net Gross goodwill Accumulated impairment Net Gross goodwill Accumulated Net Balance at beginning $ 5,681 $ (12) $ 5,669 $ 287 $ — $ 287 $ 5,968 $ (12) $ 5,956 Additions/ adjustments (1) 39 — 39 98 — 98 137 — 137 Foreign currency translation adjustments 54 — 54 1 — 1 55 — 55 Ending balance $ 5,774 $ (12) $ 5,762 $ 386 $ — $ 386 $ 6,160 $ (12) $ 6,148 Year Ended December 31, 2023 MA MIS Consolidated Gross goodwill Accumulated impairment charge Net goodwill Gross goodwill Accumulated impairment charge Net goodwill Gross goodwill Accumulated impairment charge Net goodwill Balance at beginning $ 5,474 $ (12) $ 5,462 $ 377 $ — $ 377 $ 5,851 $ (12) $ 5,839 Additions/ adjustments (2) 90 — 90 (87) — (87) 3 — 3 Foreign currency translation 117 — 117 (3) — (3) 114 — 114 Ending balance $ 5,681 $ (12) $ 5,669 $ 287 $ — $ 287 $ 5,968 $ (12) $ 5,956 (1) The 2024 additions/adjustments primarily relate to certain immaterial acquisitions in 2024 (most notably GCR and Praedicat in the third quarter of 2024). (2) The 2023 additions/adjustments primarily relate to a reallocation of goodwill pursuant to a realignment of certain components of the Company's ESG business in the first quarter of 2023.
Acquired Intangible Assets and Related Amortization	Acquired intangible assets and related amortization consisted of: September 30, December 31, Customer relationships $ 2,109 $ 2,065 Accumulated amortization (634) (556) Net customer relationships 1,475 1,509 Software/product technology 691 674 Accumulated amortization (420) (364) Net software/product technology 271 310 Database 179 179 Accumulated amortization (97) (82) Net database 82 97 Trade names 207 199 Accumulated amortization (83) (72) Net trade names 124 127 Other (1) 66 52 Accumulated amortization (48) (46) Net other 18 6 Total acquired intangible assets, net $ 1,970 $ 2,049 (1) Other intangible assets primarily consist of trade secrets, covenants not to compete, and acquired ratings methodologies and models.
Amortization Expense Relating to Acquired Intangible Assets	Amortization expense relating to acquired intangible assets is as follows: Three Months Ended September 30, Nine Months Ended 2024 2023 2024 2023 Amortization expense $ 51 $ 49 $ 148 $ 150

RESTRUCTURING (Tables)

RESTRUCTURING (Tables)	9 Months Ended
	Sep. 30, 2024
Restructuring and Related Activities [Abstract]
Restructuring Expenses Included in Consolidated Statements of Operations	Total expense included in the accompanying consolidated statements of operations relating to the aforementioned restructuring program is below: 2022 - 2023 Geolocation Restructuring Program Three months ended September 30, Nine months ended September 30, Cumulative expense incurred 2024 2023 2024 2023 Employee Termination Costs $ 6 $ 17 $ 13 $ 39 $ 149 Real Estate Related Costs — 10 — 12 63 Other Costs — — — — 1 Total Restructuring $ 6 $ 27 $ 13 $ 51 $ 213 The table below shows cumulative restructuring expense incurred through September 30, 2024 by reportable segment. MA MIS Total 2022 - 2023 Geolocation Restructuring Program $ 115 $ 98 $ 213

FAIR VALUE (Tables)

FAIR VALUE (Tables)	9 Months Ended
	Sep. 30, 2024
Fair Value Disclosures [Abstract]
Financial Instruments Carried at Fair Value on Recurring Basis	The tables below present information about items that are carried at fair value at September 30, 2024 and December 31, 2023: Fair Value Measurement as of September 30, 2024 Description Balance Level 1 Level 2 Assets: Derivatives (1) $ 17 $ — $ 17 Money market funds/mutual funds 122 122 — Total $ 139 $ 122 $ 17 Liabilities: Derivatives (1) $ 333 $ — $ 333 Total $ 333 $ — $ 333 Fair Value Measurement as of December 31, 2023 Description Balance Level 1 Level 2 Assets: Derivatives (1) $ 16 $ — $ 16 Money market funds/mutual funds 107 107 — Total $ 123 $ 107 $ 16 Liabilities: Derivatives (1) $ 366 $ — $ 366 Total $ 366 $ — $ 366 (1) Represents fair value of certain derivative contracts as more fully described in Note 7 to the consolidated financial statements.

OTHER BALANCE SHEET AND STATE_2

OTHER BALANCE SHEET AND STATEMENTS OF OPERATIONS INFORMATION (Tables)	9 Months Ended
	Sep. 30, 2024
Other Balance Sheet And Statement Of Operations Information [Abstract]
Additional Details Related to Certain Balance Sheet Captions	The following tables contain additional detail related to certain balance sheet captions: September 30, 2024 December 31, 2023 Other current assets: Prepaid taxes $ 73 $ 115 Prepaid expenses 168 133 Capitalized costs to obtain and fulfill sales contracts 118 116 Foreign exchange forwards on certain assets and liabilities 17 13 Interest receivable on interest rate and cross currency swaps 51 79 Other 43 33 Total other current assets $ 470 $ 489 Other assets: Investments in non-consolidated affiliates $ 467 $ 521 Deposits for real-estate leases 16 16 Indemnification assets related to acquisitions 112 111 Mutual funds, certificates of deposit and money market deposit accounts/funds 113 100 Company owned life insurance (at contract value) 49 47 Capitalized costs to obtain sales contracts 202 196 Derivative instruments designated as accounting hedges — 3 Pension and other retirement employee benefits 41 41 Other 86 103 Total other assets $ 1,086 $ 1,138 Accounts payable and accrued liabilities: Salaries and benefits $ 130 $ 130 Incentive compensation 321 345 Customer credits, advanced payments and advanced billings 136 105 Dividends 17 7 Professional service fees 56 46 Interest accrued on debt 52 83 Accounts payable 50 23 Income taxes 156 108 Pension and other retirement employee benefits 15 15 Accrued royalties 18 24 Restructuring liability 12 35 Derivative instruments designated as accounting hedges 6 — Interest payable on interest rate and cross currency swaps 52 67 Other 112 88 Total accounts payable and accrued liabilities $ 1,133 $ 1,076 September 30, 2024 December 31, 2023 Other liabilities: Pension and other retirement employee benefits $ 199 $ 190 Interest accrued on UTPs 45 36 MAKS indemnification provisions 19 19 Income tax liability - non-current portion 12 15 Derivative instruments designated as accounting hedges 327 366 Other 59 50 Total other liabilities $ 661 $ 676
Investments in and Advances to Affiliates	The following table provides additional detail regarding Moody's investments in non-consolidated affiliates, as included in other assets in the consolidated balance sheets: September 30, 2024 December 31, 2023 Equity method investments (1) $ 131 $ 186 Investments measured using the measurement alternative (2) 327 327 Other 9 8 Total investments in non-consolidated affiliates $ 467 $ 521 (1) Equity securities in which the Company has significant influence over the investee but does not have a controlling financial interest in accordance with ASC Topic 323. (2) Equity securities without readily determinable fair value for which the Company has elected to apply the measurement alternative in accordance with ASC Topic 321.
Other Non-Operating	The following table summarizes the components of other non-operating income, net: Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 FX (loss) gain (1) $ — $ 2 $ (7) $ (29) Net periodic pension income - non-service and non-interest cost components 9 8 25 26 Income from investments in non-consolidated affiliates 8 9 10 12 Gain on previously held equity method investments (2) 7 — 7 — Gain on investments 4 — 12 11 Other (3) (3) (1) (2) 11 Total $ 25 $ 18 $ 45 $ 31 (1) The amount for the nine months ended September 30, 2023 includes a $23 million loss recorded pursuant to an immaterial out-of-period adjustment relating to the 2022 fiscal year. (2) The amounts for the three and nine months ended September 30, 2024 reflect non-cash gains relating to the step-acquisitions of Praedicat and GCR. (3) The amount for the nine months ended September 30, 2023 includes a benefit of $9 million related to the favorable resolutions of various tax matters.

COMPREHENSIVE INCOME AND ACCU_2

COMPREHENSIVE INCOME AND ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables)	9 Months Ended
	Sep. 30, 2024
Equity [Abstract]
Components of Accumulated Other Comprehensive Income	The cumulative amount of net investment hedge and cash flow hedge gains (losses) remaining in AOCL is as follows: Cumulative Gains/(Losses), net of tax September 30, 2024 December 31, 2023 Net investment hedges Cross currency swaps $ 1 $ 21 FX forwards 29 29 Long-term debt (7) 3 Total net investment hedges $ 23 $ 53 Cash flow hedges Interest rate contracts $ (43) $ (45) Cross currency swaps 1 1 Total cash flow hedges (42) (44) Total net gain in AOCL $ (19) $ 9 The following tables show changes in AOCL by component (net of tax): Three Months Ended September 30, 2024 2023 Gains/(Losses) Pension and Other Retirement Benefits Cash Flow Hedges Foreign Currency Translation Adjustments Net Investment Hedges Total Pension and Other Retirement Benefits Cash Flow Hedges Foreign Currency Translation Adjustments Net Investment Hedges Total Balance at June 30, $ (59) $ (43) $ (674) $ 159 $ (617) $ (48) $ (45) $ (577) $ 100 $ (570) Other comprehensive income/(loss) before reclassifications — — 249 (136) 113 1 — (176) 93 (82) Amounts reclassified from AOCL — 1 — — 1 (1) 1 — — — Other comprehensive income/(loss) — 1 249 (136) 114 — 1 (176) 93 (82) Balance at September 30, $ (59) $ (42) $ (425) $ 23 $ (503) $ (48) $ (44) $ (753) $ 193 $ (652) Nine Months Ended September 30, 2024 2023 Gains/(Losses) Pension and Other Retirement Benefits Cash Flow Hedges Foreign Currency Translation Adjustments Net Investment Hedges Total Pension and Other Retirement Benefits Cash Flow Hedges Foreign Currency Translation Adjustments Net Investment Hedges Total Balance at December 31, $ (56) $ (44) $ (520) $ 53 $ (567) $ (47) $ (45) $ (736) $ 185 $ (643) Other comprehensive (loss)/income before reclassifications (2) — 95 (30) 63 1 — (17) 8 (8) Amounts reclassified from AOCL (1) 2 — — 1 (2) 1 — — (1) Other comprehensive (loss)/income (3) 2 95 (30) 64 (1) 1 (17) 8 (9) Balance at September 30, $ (59) $ (42) $ (425) $ 23 $ (503) $ (48) $ (44) $ (753) $ 193 $ (652)

INDEBTEDNESS (Tables)

INDEBTEDNESS (Tables)	9 Months Ended
	Sep. 30, 2024
Debt Disclosure [Abstract]
Summary of Total Indebtedness	The following table summarizes total indebtedness: September 30, 2024 Notes Payable: Principal Amount Fair Value of Interest Rate Swaps (1) Unamortized (Discount) Premium Unamortized Debt Issuance Costs Carrying Value 5.25% 2014 Senior Notes, due 2044 $ 600 $ (26) $ 3 $ (4) $ 573 1.75% 2015 Senior Notes, due 2027 558 — — (1) 557 3.25% 2017 Senior Notes, due 2028 500 (14) (2) (1) 483 4.25% 2018 Senior Notes, due 2029 400 (25) (1) (1) 373 4.875% 2018 Senior Notes, due 2048 400 (29) (6) (3) 362 0.950% 2019 Senior Notes, due 2030 837 — (2) (3) 832 3.75% 2020 Senior Notes, due 2025 700 (6) — (1) 693 3.25% 2020 Senior Notes, due 2050 300 — (4) (3) 293 2.55% 2020 Senior Notes, due 2060 300 — (2) (3) 295 2.00% 2021 Senior Notes, due 2031 600 — (6) (4) 590 2.75% 2021 Senior Notes, due 2041 600 — (12) (5) 583 3.10% 2021 Senior Notes, due 2061 500 — (7) (5) 488 3.75% 2022 Senior Notes, due 2052 500 (21) (8) (5) 466 4.25% 2022 Senior Notes, due 2032 500 (5) (2) (3) 490 5.00% 2024 Senior Notes, due 2034 500 — (4) (5) 491 Total debt $ 7,795 $ (126) $ (53) $ (47) $ 7,569 Current portion (693) Total long-term debt $ 6,876 December 31, 2023 Notes Payable: Principal Amount Fair Value of Interest Rate Swaps (1) Unamortized (Discount) Premium Unamortized Debt Issuance Costs Carrying Value 5.25% 2014 Senior Notes, due 2044 $ 600 $ (34) $ 3 $ (4) $ 565 1.75% 2015 Senior Notes, due 2027 552 — — (1) 551 3.25% 2017 Senior Notes, due 2028 500 (26) (2) (2) 470 4.25% 2018 Senior Notes, due 2029 400 (34) (2) (2) 362 4.875% 2018 Senior Notes, due 2048 400 (36) (6) (3) 355 0.950% 2019 Senior Notes, due 2030 829 — (2) (4) 823 3.75% 2020 Senior Notes, due 2025 700 (16) (1) (1) 682 3.25% 2020 Senior Notes, due 2050 300 — (4) (3) 293 2.55% 2020 Senior Notes, due 2060 300 — (2) (3) 295 2.00% 2021 Senior Notes, due 2031 600 — (6) (4) 590 2.75% 2021 Senior Notes, due 2041 600 — (12) (5) 583 3.10% 2021 Senior Notes, due 2061 500 — (7) (5) 488 3.75% 2022 Senior Notes, due 2052 500 (29) (8) (5) 458 4.25% 2022 Senior Notes, due 2032 500 (8) (2) (4) 486 Total long-term debt $ 7,281 $ (183) $ (51) $ (46) $ 7,001 (1) The fair value of interest rate swaps in the tables above represents the cumulative amount of fair value hedging adjustments included in the carrying value of the hedged debt.
Principal Payments Due on Long-Term Borrowings	The repayment schedule for the Company’s borrowings is as follows: Year Ending December 31, Year Ending Total 2024 (After September 30,) $ — 2025 700 2026 — 2027 558 2028 500 Thereafter 6,037 Total $ 7,795
Summary of Components of Interest as Presented in Consolidated Statements of Operations	The following table summarizes the components of interest as presented in the consolidated statements of operations and the cash paid for interest: Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 Income $ 28 $ 19 $ 73 $ 44 Expense on borrowings (1) (79) (75) (227) (220) (Expense) income on UTPs and other tax related liabilities (2) (3) (4) (12) 10 Net periodic pension costs - interest component (6) (6) (19) (19) Interest expense, net $ (60) $ (66) $ (185) $ (185) Interest paid (3) $ 83 $ 87 $ 234 $ 230 (1) Expense on borrowings includes interest on long-term debt, as well as realized gains/losses related to interest rate swaps and cross currency swaps, which are more fully discussed in Note 7. (2) The amount for the nine months ended September 30, 2023 includes a $22 million reduction of tax-related interest expense primarily related to the resolutions of tax matters. (3) Interest paid includes net settlements on interest rate swaps, which are more fully discussed in Note 7.
Fair Value and Carrying Value of Long-Term Debt	The fair value and carrying value of the Company’s debt as of September 30, 2024 and December 31, 2023 are as follows: September 30, 2024 December 31, 2023 Carrying Value Estimated Fair Value Carrying Value Estimated Fair Value Total debt $ 7,569 $ 7,066 $ 7,001 $ 6,402

LEASES (Tables)

LEASES (Tables)	9 Months Ended
	Sep. 30, 2024
Leases [Abstract]
Components of Lease Cost	The following table presents the components of the Company’s lease cost: Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 Operating lease cost $ 23 $ 23 $ 66 $ 70 Sublease income (1) (1) (5) (5) Variable lease cost 5 6 16 16 Total lease cost $ 27 $ 28 $ 77 $ 81
Schedule of Operating Leases Information	The following tables present other information related to the Company’s operating leases: Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 Cash paid for amounts included in the measurement of operating lease liabilities $ 31 $ 30 $ 90 $ 90 Right-of-use assets obtained in exchange for new operating lease liabilities $ 15 $ 1 $ 20 $ 25 September 30, 2024 September 30, 2023 Weighted-average remaining lease term 4.0 years 4.6 years Weighted-average discount rate applied to operating leases 3.2 % 3.2 %
Lessee, Operating Lease, Liability, Maturity	The following table presents a maturity analysis of the future minimum lease payments included within the Company’s operating lease liabilities at September 30, 2024: Year Ending December 31, Operating Leases 2024 (After September 30,) $ 30 2025 113 2026 93 2027 75 2028 24 After 2028 41 Total lease payments (undiscounted) 376 Less: Interest 22 Present value of lease liabilities: $ 354 Lease liabilities - current $ 109 Lease liabilities - noncurrent $ 245

SEGMENT INFORMATION (Tables)

SEGMENT INFORMATION (Tables)	9 Months Ended
	Sep. 30, 2024
Segment Reporting [Abstract]
Financial Information by Segment	The table below shows revenue and Adjusted Operating Income by reportable segment. Adjusted Operating Income is a financial metric utilized by the Company’s CODM to assess the profitability of each reportable segment. Refer to Note 2 for further details on the components of the Company’s revenue. Three Months Ended September 30, 2024 2023 MA MIS Eliminations Consolidated MA MIS Eliminations Consolidated Total external revenue $ 831 $ 982 $ — $ 1,813 $ 776 $ 696 $ — $ 1,472 Intersegment revenue 3 48 (51) — 3 47 (50) — Revenue 834 1,030 (51) 1,813 779 743 (50) 1,472 Operating, SG&A 581 416 (51) 946 517 348 (50) 815 Adjusted Operating Income $ 253 $ 614 $ — $ 867 $ 262 $ 395 $ — $ 657 Add: Depreciation and 88 20 — 108 76 19 — 95 Restructuring 4 2 — 6 22 5 — 27 Charges related to asset abandonment 15 — — 15 — — — — Operating Income $ 738 $ 535 Nine Months Ended September 30, 2024 2023 MA MIS Eliminations Consolidated MA MIS Eliminations Consolidated Total external revenue $ 2,432 $ 2,984 $ — $ 5,416 $ 2,260 $ 2,176 $ — $ 4,436 Intersegment revenue 10 144 (154) — 10 138 (148) — Revenue 2,442 3,128 (154) 5,416 2,270 2,314 (148) 4,436 Operating, SG&A 1,721 1,174 (154) 2,741 1,584 1,034 (148) 2,470 Adjusted Operating Income $ 721 $ 1,954 $ — $ 2,675 $ 686 $ 1,280 $ — $ 1,966 Add: Depreciation and amortization 260 58 — 318 220 56 — 276 Restructuring 7 6 — 13 38 13 — 51 Charges related to asset abandonment 30 — — 30 — — — — Operating Income $ 2,314 $ 1,639
Restructuring Expenses Included in Consolidated Statements of Operations	Total expense included in the accompanying consolidated statements of operations relating to the aforementioned restructuring program is below: 2022 - 2023 Geolocation Restructuring Program Three months ended September 30, Nine months ended September 30, Cumulative expense incurred 2024 2023 2024 2023 Employee Termination Costs $ 6 $ 17 $ 13 $ 39 $ 149 Real Estate Related Costs — 10 — 12 63 Other Costs — — — — 1 Total Restructuring $ 6 $ 27 $ 13 $ 51 $ 213 The table below shows cumulative restructuring expense incurred through September 30, 2024 by reportable segment. MA MIS Total 2022 - 2023 Geolocation Restructuring Program $ 115 $ 98 $ 213
Company's Reportable Segment Revenues Disaggregated by Segment and Geographic Region	The following table presents the Company’s reportable segment revenues disaggregated by segment and geographic region: Three Months Ended September 30, Nine Months Ended 2024 2023 2024 2023 MA: U.S. $ 346 $ 334 $ 1,021 $ 971 Non-U.S.: EMEA 334 310 969 895 Asia-Pacific 84 76 251 224 Americas 67 56 191 170 Total Non-U.S. 485 442 1,411 1,289 Total MA 831 776 2,432 2,260 MIS: U.S. 653 428 1,921 1,329 Non-U.S.: EMEA 212 155 685 509 Asia-Pacific 73 67 225 213 Americas 44 46 153 125 Total Non-U.S. 329 268 1,063 847 Total MIS 982 696 2,984 2,176 Total MCO $ 1,813 $ 1,472 $ 5,416 $ 4,436 Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 United States $ 999 $ 762 $ 2,942 $ 2,300 Non-U.S.: EMEA 546 465 1,654 1,404 Asia-Pacific 157 143 476 437 Americas 111 102 344 295 Total Non-U.S. 814 710 2,474 2,136 Total $ 1,813 $ 1,472 $ 5,416 $ 4,436

Description of Business and B_3

Description of Business and Basis of Presentation - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2024 segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of reportable segments	2

Revenues - Revenue by Category

Revenues - Revenue by Category (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Revenue	$ 1,813	$ 1,472	$ 5,416	$ 4,436
Eliminations
Disaggregation of Revenue [Line Items]
Revenue	(51)	(50)	(154)	(148)
Eliminations
Disaggregation of Revenue [Line Items]
Revenue	(51)	(50)	(154)	(148)
MA
Disaggregation of Revenue [Line Items]
Revenue	831	776	2,432	2,260
MA | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	834	779	2,442	2,270
MA | Eliminations
Disaggregation of Revenue [Line Items]
Revenue	3	3	10	10
MA | Decision Solutions (DS)
Disaggregation of Revenue [Line Items]
Revenue	383	354
MA | Decision Solutions (DS) | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	383	354	1,114	1,022
MA | Decision Solutions (DS) | DS Banking Product and Service | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	140	136	405	390
MA | Decision Solutions (DS) | Insurance | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	148	138	439	404
MA | Decision Solutions (DS) | KYC | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	95	80	270	228
MA | Research and Insights (R&I)
Disaggregation of Revenue [Line Items]
Revenue	235	222
MA | Research and Insights (R&I) | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	235	222	683	654
MA | Data and Information (D&I)
Disaggregation of Revenue [Line Items]
Revenue	213	200
MA | Data and Information (D&I) | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	213	200	635	584
MIS
Disaggregation of Revenue [Line Items]
Revenue	982	696	2,984	2,176
MIS | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	1,030	743	3,128	2,314
MIS | Eliminations
Disaggregation of Revenue [Line Items]
Revenue	48	47	144	138
MIS | Corporate Finance (CFG)
Disaggregation of Revenue [Line Items]
Revenue	515	346
MIS | Corporate Finance (CFG) | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	515	346	1,569	1,067
MIS | Corporate Finance (CFG) | Investment-grade | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	149	63	416	272
MIS | Corporate Finance (CFG) | High-yield | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	80	38	232	116
MIS | Corporate Finance (CFG) | Bank loans | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	120	82	422	209
MIS | Corporate Finance (CFG) | Other accounts | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	166	163	499	470
MIS | Structured Finance (SFG)
Disaggregation of Revenue [Line Items]
Revenue	135	102
MIS | Structured Finance (SFG) | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	135	102	380	303
MIS | Structured Finance (SFG) | Other accounts | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	1	1	2	2
MIS | Structured Finance (SFG) | Asset-backed securities | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	34	30	101	89
MIS | Structured Finance (SFG) | RMBS | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	24	22	73	72
MIS | Structured Finance (SFG) | CMBS | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	27	17	66	45
MIS | Structured Finance (SFG) | Structured credit | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	49	32	138	95
MIS | Financial Institutions (FIG)
Disaggregation of Revenue [Line Items]
Revenue	170	126
MIS | Financial Institutions (FIG) | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	170	126	560	413
MIS | Financial Institutions (FIG) | Insurance | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	46	24	166	92
MIS | Financial Institutions (FIG) | Other accounts | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	3	3	10	9
MIS | Financial Institutions (FIG) | Banking | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	108	92	344	289
MIS | Financial Institutions (FIG) | Managed investments | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	13	7	40	23
MIS | Public, Project and Infrastructure Finance (PPIF)
Disaggregation of Revenue [Line Items]
Revenue	154	115
MIS | Public, Project and Infrastructure Finance (PPIF) | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	154	115	449	371
MIS | Public, Project and Infrastructure Finance (PPIF) | Public finance / sovereign | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	61	49	187	155
MIS | Public, Project and Infrastructure Finance (PPIF) | Project and infrastructure | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	93	66	262	216
MIS | Total ratings revenue
Disaggregation of Revenue [Line Items]
Revenue	974	689
MIS | Total ratings revenue | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	974	689	2,958	2,154
MIS | MIS Other
Disaggregation of Revenue [Line Items]
Revenue	8	7
MIS | MIS Other | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	$ 8	$ 7	$ 26	$ 22

Revenues - Revenues Disaggregat

Revenues - Revenues Disaggregated by Line of Business and Geographical Area (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Revenue	$ 1,813	$ 1,472	$ 5,416	$ 4,436
United States
Disaggregation of Revenue [Line Items]
Revenue	999	762	2,942	2,300
Non-U.S.
Disaggregation of Revenue [Line Items]
Revenue	814	710	2,474	2,136
MA
Disaggregation of Revenue [Line Items]
Revenue	831	776	2,432	2,260
MA | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	834	779	2,442	2,270
MA | United States
Disaggregation of Revenue [Line Items]
Revenue	346	334	1,021	971
MA | United States | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	346	334	1,021	971
MA | Non-U.S.
Disaggregation of Revenue [Line Items]
Revenue	485	442	1,411	1,289
MA | Non-U.S. | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	485	442	1,411	1,289
MA | Decision Solutions (DS)
Disaggregation of Revenue [Line Items]
Revenue	383	354
MA | Decision Solutions (DS) | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	383	354	1,114	1,022
MA | Decision Solutions (DS) | United States
Disaggregation of Revenue [Line Items]
Revenue	144	141
MA | Decision Solutions (DS) | United States | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue			420	406
MA | Decision Solutions (DS) | Non-U.S.
Disaggregation of Revenue [Line Items]
Revenue	239	213
MA | Decision Solutions (DS) | Non-U.S. | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue			694	616
MA | Research and Insights (R&I)
Disaggregation of Revenue [Line Items]
Revenue	235	222
MA | Research and Insights (R&I) | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	235	222	683	654
MA | Research and Insights (R&I) | United States
Disaggregation of Revenue [Line Items]
Revenue	128	124
MA | Research and Insights (R&I) | United States | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue			374	361
MA | Research and Insights (R&I) | Non-U.S.
Disaggregation of Revenue [Line Items]
Revenue	107	98
MA | Research and Insights (R&I) | Non-U.S. | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue			309	293
MA | Data and Information (D&I)
Disaggregation of Revenue [Line Items]
Revenue	213	200
MA | Data and Information (D&I) | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	213	200	635	584
MA | Data and Information (D&I) | United States
Disaggregation of Revenue [Line Items]
Revenue	74	69
MA | Data and Information (D&I) | United States | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue			227	204
MA | Data and Information (D&I) | Non-U.S.
Disaggregation of Revenue [Line Items]
Revenue	139	131
MA | Data and Information (D&I) | Non-U.S. | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue			408	380
MIS
Disaggregation of Revenue [Line Items]
Revenue	982	696	2,984	2,176
MIS | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	1,030	743	3,128	2,314
MIS | United States
Disaggregation of Revenue [Line Items]
Revenue	653	428	1,921	1,329
MIS | United States | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	653	428	1,921	1,329
MIS | Non-U.S.
Disaggregation of Revenue [Line Items]
Revenue	329	268	1,063	847
MIS | Non-U.S. | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	329	268	1,063	847
MIS | Corporate Finance (CFG)
Disaggregation of Revenue [Line Items]
Revenue	515	346
MIS | Corporate Finance (CFG) | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	515	346	1,569	1,067
MIS | Corporate Finance (CFG) | United States
Disaggregation of Revenue [Line Items]
Revenue	364	242
MIS | Corporate Finance (CFG) | United States | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue			1,078	727
MIS | Corporate Finance (CFG) | Non-U.S.
Disaggregation of Revenue [Line Items]
Revenue	151	104
MIS | Corporate Finance (CFG) | Non-U.S. | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue			491	340
MIS | Structured Finance (SFG)
Disaggregation of Revenue [Line Items]
Revenue	135	102
MIS | Structured Finance (SFG) | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	135	102	380	303
MIS | Structured Finance (SFG) | United States
Disaggregation of Revenue [Line Items]
Revenue	98	65
MIS | Structured Finance (SFG) | United States | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue			266	186
MIS | Structured Finance (SFG) | Non-U.S.
Disaggregation of Revenue [Line Items]
Revenue	37	37
MIS | Structured Finance (SFG) | Non-U.S. | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue			114	117
MIS | Financial Institutions (FIG)
Disaggregation of Revenue [Line Items]
Revenue	170	126
MIS | Financial Institutions (FIG) | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	170	126	560	413
MIS | Financial Institutions (FIG) | United States
Disaggregation of Revenue [Line Items]
Revenue	90	52
MIS | Financial Institutions (FIG) | United States | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue			292	188
MIS | Financial Institutions (FIG) | Non-U.S.
Disaggregation of Revenue [Line Items]
Revenue	80	74
MIS | Financial Institutions (FIG) | Non-U.S. | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue			268	225
MIS | Public, Project and Infrastructure Finance (PPIF)
Disaggregation of Revenue [Line Items]
Revenue	154	115
MIS | Public, Project and Infrastructure Finance (PPIF) | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	154	115	449	371
MIS | Public, Project and Infrastructure Finance (PPIF) | United States
Disaggregation of Revenue [Line Items]
Revenue	100	69
MIS | Public, Project and Infrastructure Finance (PPIF) | United States | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue			284	228
MIS | Public, Project and Infrastructure Finance (PPIF) | Non-U.S.
Disaggregation of Revenue [Line Items]
Revenue	54	46
MIS | Public, Project and Infrastructure Finance (PPIF) | Non-U.S. | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue			165	143
MIS | Total ratings revenue
Disaggregation of Revenue [Line Items]
Revenue	974	689
MIS | Total ratings revenue | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	974	689	2,958	2,154
MIS | Total ratings revenue | United States
Disaggregation of Revenue [Line Items]
Revenue	652	428
MIS | Total ratings revenue | United States | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue			1,920	1,329
MIS | Total ratings revenue | Non-U.S.
Disaggregation of Revenue [Line Items]
Revenue	322	261
MIS | Total ratings revenue | Non-U.S. | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue			1,038	825
MIS | MIS Other
Disaggregation of Revenue [Line Items]
Revenue	8	7
MIS | MIS Other | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	8	7	26	22
MIS | MIS Other | United States
Disaggregation of Revenue [Line Items]
Revenue	1	0
MIS | MIS Other | United States | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue			1	0
MIS | MIS Other | Non-U.S.
Disaggregation of Revenue [Line Items]
Revenue	$ 7	$ 7
MIS | MIS Other | Non-U.S. | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue			$ 25	$ 22

Revenues - Consolidated Revenue

Revenues - Consolidated Revenue Information by Geographic Area (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Segment Reporting Information [Line Items]
Revenue	$ 1,813	$ 1,472	$ 5,416	$ 4,436
MA
Segment Reporting Information [Line Items]
Revenue	831	776	2,432	2,260
MA | Operating Segments
Segment Reporting Information [Line Items]
Revenue	834	779	2,442	2,270
MIS
Segment Reporting Information [Line Items]
Revenue	982	696	2,984	2,176
MIS | Operating Segments
Segment Reporting Information [Line Items]
Revenue	1,030	743	3,128	2,314
United States
Segment Reporting Information [Line Items]
Revenue	999	762	2,942	2,300
United States | MA
Segment Reporting Information [Line Items]
Revenue	346	334	1,021	971
United States | MA | Operating Segments
Segment Reporting Information [Line Items]
Revenue	346	334	1,021	971
United States | MIS
Segment Reporting Information [Line Items]
Revenue	653	428	1,921	1,329
United States | MIS | Operating Segments
Segment Reporting Information [Line Items]
Revenue	653	428	1,921	1,329
Non-U.S.
Segment Reporting Information [Line Items]
Revenue	814	710	2,474	2,136
Non-U.S. | MA
Segment Reporting Information [Line Items]
Revenue	485	442	1,411	1,289
Non-U.S. | MA | Operating Segments
Segment Reporting Information [Line Items]
Revenue	485	442	1,411	1,289
Non-U.S. | MIS
Segment Reporting Information [Line Items]
Revenue	329	268	1,063	847
Non-U.S. | MIS | Operating Segments
Segment Reporting Information [Line Items]
Revenue	329	268	1,063	847
EMEA
Segment Reporting Information [Line Items]
Revenue	546	465	1,654	1,404
EMEA | MA | Operating Segments
Segment Reporting Information [Line Items]
Revenue	334	310	969	895
EMEA | MIS | Operating Segments
Segment Reporting Information [Line Items]
Revenue	212	155	685	509
Asia-Pacific
Segment Reporting Information [Line Items]
Revenue	157	143	476	437
Asia-Pacific | MA | Operating Segments
Segment Reporting Information [Line Items]
Revenue	84	76	251	224
Asia-Pacific | MIS | Operating Segments
Segment Reporting Information [Line Items]
Revenue	73	67	225	213
Americas
Segment Reporting Information [Line Items]
Revenue	111	102	344	295
Americas | MA | Operating Segments
Segment Reporting Information [Line Items]
Revenue	67	56	191	170
Americas | MIS | Operating Segments
Segment Reporting Information [Line Items]
Revenue	$ 44	$ 46	$ 153	$ 125

Revenues - Transaction and Rela

Revenues - Transaction and Relationship Revenue (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Revenue	$ 1,813	$ 1,472	$ 5,416	$ 4,436
Percentage of revenues	100%	100%	100%	100%
Transaction Revenue
Disaggregation of Revenue [Line Items]
Revenue	$ 701	$ 437	$ 2,151	$ 1,403
Percentage of revenues	39%	30%	40%	32%
Recurring Revenue
Disaggregation of Revenue [Line Items]
Revenue	$ 1,112	$ 1,035	$ 3,265	$ 3,033
Percentage of revenues	61%	70%	60%	68%
MA
Disaggregation of Revenue [Line Items]
Revenue	$ 831	$ 776	$ 2,432	$ 2,260
MA | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	$ 834	$ 779	$ 2,442	$ 2,270
Percentage of revenues	100%	100%	100%	100%
MA | Decision Solutions (DS)
Disaggregation of Revenue [Line Items]
Revenue	$ 383	$ 354
MA | Decision Solutions (DS) | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	$ 383	$ 354	$ 1,114	$ 1,022
Percentage of revenues	100%	100%	100%	100%
MA | Research and Insights (R&I)
Disaggregation of Revenue [Line Items]
Revenue	$ 235	$ 222
MA | Research and Insights (R&I) | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	$ 235	$ 222	$ 683	$ 654
Percentage of revenues	100%	100%	100%	100%
MA | Data and Information (D&I)
Disaggregation of Revenue [Line Items]
Revenue	$ 213	$ 200
MA | Data and Information (D&I) | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	$ 213	$ 200	$ 635	$ 584
Percentage of revenues	100%	100%	100%	100%
MA | Transaction Revenue
Disaggregation of Revenue [Line Items]
Revenue	$ 38	$ 48	$ 119	$ 140
MA | Transaction Revenue | Operating Segments
Disaggregation of Revenue [Line Items]
Percentage of revenues	5%	6%	5%	6%
MA | Transaction Revenue | Decision Solutions (DS) | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	$ 33	$ 43	$ 105	$ 126
Percentage of revenues	9%	12%	9%	12%
MA | Transaction Revenue | Research and Insights (R&I) | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	$ 4	$ 4	$ 11	$ 12
Percentage of revenues	2%	2%	2%	2%
MA | Transaction Revenue | Data and Information (D&I) | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	$ 1	$ 1	$ 3	$ 2
Percentage of revenues	0%	1%	0%	0%
MA | Recurring Revenue
Disaggregation of Revenue [Line Items]
Revenue	$ 793	$ 728	$ 2,313	$ 2,120
MA | Recurring Revenue | Operating Segments
Disaggregation of Revenue [Line Items]
Percentage of revenues	95%	94%	95%	94%
MA | Recurring Revenue | Decision Solutions (DS) | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	$ 350	$ 311	$ 1,009	$ 896
Percentage of revenues	91%	88%	91%	88%
MA | Recurring Revenue | Research and Insights (R&I) | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	$ 231	$ 218	$ 672	$ 642
Percentage of revenues	98%	98%	98%	98%
MA | Recurring Revenue | Data and Information (D&I) | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	$ 212	$ 199	$ 632	$ 582
Percentage of revenues	100%	99%	100%	100%
MIS
Disaggregation of Revenue [Line Items]
Revenue	$ 982	$ 696	$ 2,984	$ 2,176
MIS | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	$ 1,030	$ 743	$ 3,128	$ 2,314
Percentage of revenues	100%	100%	100%	100%
MIS | Corporate Finance (CFG)
Disaggregation of Revenue [Line Items]
Revenue	$ 515	$ 346
MIS | Corporate Finance (CFG) | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	$ 515	$ 346	$ 1,569	$ 1,067
Percentage of revenues	100%	100%	100%	100%
MIS | Structured Finance (SFG)
Disaggregation of Revenue [Line Items]
Revenue	$ 135	$ 102
MIS | Structured Finance (SFG) | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	$ 135	$ 102	$ 380	$ 303
Percentage of revenues	100%	100%	100%	100%
MIS | Financial Institutions (FIG)
Disaggregation of Revenue [Line Items]
Revenue	$ 170	$ 126
MIS | Financial Institutions (FIG) | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	$ 170	$ 126	$ 560	$ 413
Percentage of revenues	100%	100%	100%	100%
MIS | Public, Project and Infrastructure Finance (PPIF)
Disaggregation of Revenue [Line Items]
Revenue	$ 154	$ 115
MIS | Public, Project and Infrastructure Finance (PPIF) | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	$ 154	$ 115	$ 449	$ 371
Percentage of revenues	100%	100%	100%	100%
MIS | MIS Other
Disaggregation of Revenue [Line Items]
Revenue	$ 8	$ 7
MIS | MIS Other | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	$ 8	$ 7	$ 26	$ 22
Percentage of revenues	100%	100%	100%	100%
MIS | Transaction Revenue
Disaggregation of Revenue [Line Items]
Revenue	$ 663	$ 389	$ 2,032	$ 1,263
MIS | Transaction Revenue | Operating Segments
Disaggregation of Revenue [Line Items]
Percentage of revenues	68%	56%	68%	58%
MIS | Transaction Revenue | Corporate Finance (CFG) | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	$ 382	$ 216	$ 1,169	$ 682
Percentage of revenues	74%	62%	75%	64%
MIS | Transaction Revenue | Structured Finance (SFG) | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	$ 78	$ 49	$ 213	$ 142
Percentage of revenues	58%	48%	56%	47%
MIS | Transaction Revenue | Financial Institutions (FIG) | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	$ 92	$ 52	$ 329	$ 195
Percentage of revenues	54%	41%	59%	47%
MIS | Transaction Revenue | Public, Project and Infrastructure Finance (PPIF) | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	$ 109	$ 70	$ 315	$ 240
Percentage of revenues	71%	61%	70%	65%
MIS | Transaction Revenue | MIS Other | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	$ 2	$ 2	$ 6	$ 4
Percentage of revenues	25%	29%	23%	18%
MIS | Recurring Revenue
Disaggregation of Revenue [Line Items]
Revenue	$ 319	$ 307	$ 952	$ 913
MIS | Recurring Revenue | Operating Segments
Disaggregation of Revenue [Line Items]
Percentage of revenues	32%	44%	32%	42%
MIS | Recurring Revenue | Corporate Finance (CFG) | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	$ 133	$ 130	$ 400	$ 385
Percentage of revenues	26%	38%	25%	36%
MIS | Recurring Revenue | Structured Finance (SFG) | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	$ 57	$ 53	$ 167	$ 161
Percentage of revenues	42%	52%	44%	53%
MIS | Recurring Revenue | Financial Institutions (FIG) | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	$ 78	$ 74	$ 231	$ 218
Percentage of revenues	46%	59%	41%	53%
MIS | Recurring Revenue | Public, Project and Infrastructure Finance (PPIF) | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	$ 45	$ 45	$ 134	$ 131
Percentage of revenues	29%	39%	30%	35%
MIS | Recurring Revenue | MIS Other | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	$ 6	$ 5	$ 20	$ 18
Percentage of revenues	75%	71%	77%	82%

Revenues - Revenue Recognition

Revenues - Revenue Recognition Timing (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Revenue recognized	$ 1,813	$ 1,472	$ 5,416	$ 4,436
At Point in Time
Disaggregation of Revenue [Line Items]
Revenue recognized	689	413	2,097	1,336
Over Time
Disaggregation of Revenue [Line Items]
Revenue recognized	1,124	1,059	3,319	3,100
MA
Disaggregation of Revenue [Line Items]
Revenue recognized	831	776	2,432	2,260
MA | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized	834	779	2,442	2,270
MA | At Point in Time | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized	26	24	65	73
MA | Over Time | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized	805	752	2,367	2,187
MIS
Disaggregation of Revenue [Line Items]
Revenue recognized	982	696	2,984	2,176
MIS | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized	1,030	743	3,128	2,314
MIS | At Point in Time | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized	663	389	2,032	1,263
MIS | Over Time | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized	$ 319	$ 307	$ 952	$ 913

Revenues - Unbilled Receivables

Revenues - Unbilled Receivables (Detail) - Accounts Receivable - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
MA
Disaggregation of Revenue [Line Items]
Unbilled Receivables	$ 119	$ 119
MIS
Disaggregation of Revenue [Line Items]
Unbilled Receivables	$ 470	$ 415

Revenues - Schedule of Changes

Revenues - Schedule of Changes in the Deferred Revenue Balances (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Change in Contract with Customer, Liability [Abstract]
Beginning Balance	$ 1,482	$ 1,452	$ 1,381	$ 1,333
Revenue recognized that was included in the deferred revenue balance at the beginning of the period	(671)	(626)	(1,147)	(1,161)
Increases due to amounts billable excluding amounts recognized as revenue during the period	502	492	1,098	1,126
Increases due to acquisitions during the period	5	0	5	0
Effect of exchange rate changes	41	(27)	22	(7)
Total changes in deferred revenue	(123)	(161)	(22)	(42)
Ending Balance	1,359	1,291	1,359	1,291
Deferred revenue	1,300	1,226	1,300	1,226	$ 1,316
Non-current portion of deferred revenue	59	65	59	65	$ 65
MA
Change in Contract with Customer, Liability [Abstract]
Beginning Balance	1,146	1,116	1,111	1,055
Revenue recognized that was included in the deferred revenue balance at the beginning of the period	(551)	(513)	(950)	(969)
Increases due to amounts billable excluding amounts recognized as revenue during the period	410	410	860	908
Increases due to acquisitions during the period	5	0	5	0
Effect of exchange rate changes	37	(25)	21	(6)
Total changes in deferred revenue	(99)	(128)	(64)	(67)
Ending Balance	1,047	988	1,047	988
Deferred revenue	1,047	986	1,047	986
Non-current portion of deferred revenue	0	2	0	2
MIS
Change in Contract with Customer, Liability [Abstract]
Beginning Balance	336	336	270	278
Revenue recognized that was included in the deferred revenue balance at the beginning of the period	(120)	(113)	(197)	(192)
Increases due to amounts billable excluding amounts recognized as revenue during the period	92	82	238	218
Increases due to acquisitions during the period	0	0	0	0
Effect of exchange rate changes	4	(2)	1	(1)
Total changes in deferred revenue	(24)	(33)	42	25
Ending Balance	312	303	312	303
Deferred revenue	253	240	253	240
Non-current portion of deferred revenue	$ 59	$ 63	$ 59	$ 63

Revenues - Expected Recognition

Revenues - Expected Recognition Period for Remaining Performance Obligations (Detail) $ in Millions	Sep. 30, 2024 USD ($)
MA
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 3,500
MA | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percentage	60%
MA | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-10-01 | Minimum
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, period	1 year
MA | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percentage	25%
MA | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01 | Minimum
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, period	1 year
MA | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01 | Maximum
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, period	2 years
MIS
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 97
MIS | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percentage	25%
MIS | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-10-01 | Minimum
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, period	1 year
MIS | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percentage	50%
MIS | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01 | Minimum
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, period	1 year
MIS | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01 | Maximum
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, period	5 years

Stock-Based Compensation - Stoc

Stock-Based Compensation - Stock-Based Compensation Cost and Associated Tax Benefit (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Share-Based Payment Arrangement, Noncash Expense [Abstract]
Tax benefit	$ 12	$ 10	$ 36	$ 32
Stock-based compensation cost	$ 57	$ 46	$ 166	$ 143

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail) $ / shares in Units, shares in Millions, $ in Millions	9 Months Ended
	Sep. 30, 2024 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock options, granted (in shares) | shares	0.2
Employee stock options, weighted average grant date fair value (in usd per share) | $ / shares	$ 120.42
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Other than options, shares granted (in shares) | shares	0.5
Other than options, weighted average grant date fair value (in usd per share) | $ / shares	$ 372.64
Award vesting period	4 years
Unrecognized compensation expense | $	$ 279
Weighted average period to recognize expense	2 years 6 months
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	4 years
Unrecognized compensation expense | $	$ 16
Weighted average period to recognize expense	1 year 9 months 18 days
Performance Based Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Other than options, shares granted (in shares) | shares	0.2
Other than options, weighted average grant date fair value (in usd per share) | $ / shares	$ 361.83
Unrecognized compensation expense | $	$ 67
Weighted average period to recognize expense	2 years 3 months 18 days
Performance Based Restricted Stock | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	2 years
Performance Based Restricted Stock | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	4 years

Stock-Based Compensation - Weig

Stock-Based Compensation - Weighted Average Assumptions used in Determining Fair Value for Options Granted (Detail) - Share-Based Payment Arrangement	9 Months Ended
	Sep. 30, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividend yield	0.91%
Expected stock volatility	28%
Risk-free interest rate	4.34%
Expected holding period	5 years 10 months 24 days

Stock-Based Compensation - St_2

Stock-Based Compensation - Stock Option Exercises and Restricted Stock Vesting (Detail) - USD ($) shares in Millions, $ in Millions	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Proceeds from stock option exercises	$ 44	$ 26
Aggregate intrinsic value	60	48
Tax benefit realized upon exercise	$ 10	$ 11
Number of shares exercised (shares)	0.3	0.2
Restricted Stock
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Fair value of shares vested	$ 183	$ 154
Tax benefit realized upon vesting	$ 45	$ 36
Number of shares vested (shares)	0.5	0.5
Performance Based Restricted Stock
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Fair value of shares vested	$ 40	$ 24
Tax benefit realized upon vesting	$ 9	$ 3
Number of shares vested (shares)	0.1	0.1

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Effective Income Tax Rate Reconciliation [Line Items]
Effective tax rate (percent)	24%	19.90%	23.50%	14.60%
Excess tax benefits from stock compensation			$ 23
Unrecognized tax benefits, period increase (decrease), net of federal tax	$ 2		$ 13
Income tax examination, description			Moody’s is subject to U.S. federal income tax as well as income tax in various state, local and foreign jurisdictions. The tax years 2021 through 2023 remain open to examination. The Company’s New York City tax returns for 2018 through 2022 are currently under examination. The Company’s U.K. tax returns for 2017 through 2022 remain open to examination.
Foreign Tax Jurisdiction
Effective Income Tax Rate Reconciliation [Line Items]
Effective income tax rate reconciliation, change in enacted tax rate, amount			$ 7

Income Taxes - Income Taxes Pai

Income Taxes - Income Taxes Paid (Detail) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Income Tax Disclosure [Abstract]
Income taxes paid	$ 391	$ 213

Reconciliation of Weighted Av_3

Reconciliation of Weighted Average Shares Outstanding - Reconciliation of Basic to Diluted Shares Outstanding (Detail) - shares shares in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Earnings Per Share [Abstract]
Basic (in shares)	181.7	183.3	182.2	183.4
Dilutive effect of shares issuable under stock-based compensation plans (in shares)	0.8	0.7	0.8	0.7
Diluted (in shares)	182.5	184	183	184.1
Anti-dilutive options to purchase common shares and restricted stock as well as contingently issuable restricted stock which are excluded from the table above (in shares)	0.3	0.4	0.4	0.5

Cash Equivalents and Investme_3

Cash Equivalents and Investments (Detail) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2024	Dec. 31, 2023
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 2,642	$ 2,130
Short-term investments	573	63
Other assets	1,086	1,138
Certificates of deposit and money market deposit accounts/funds
Cash and Cash Equivalents [Line Items]
Cost	1,691	1,178
Gains/(Losses)	0	0
Fair Value	1,691	1,178
Cash and cash equivalents	1,117	1,112
Short-term investments	573	63
Other assets	1	3
Mutual funds
Cash and Cash Equivalents [Line Items]
Cost	101	91
Gains/(Losses)	11	6
Fair Value	112	97
Cash and cash equivalents	0	0
Short-term investments	0	0
Other assets	$ 112	$ 97

Cash Equivalents and Investme_4

Cash Equivalents and Investments (Footnote) (Detail) - Certificates of deposit and money market deposit accounts/funds	Sep. 30, 2024	Dec. 31, 2023
Short-term Investments | Minimum
Cash and Cash Equivalents [Line Items]
Securities maturity period	1 month	1 month
Short-term Investments | Maximum
Cash and Cash Equivalents [Line Items]
Securities maturity period	12 months	12 months
Other assets
Cash and Cash Equivalents [Line Items]
Securities maturity period		14 months
Other assets | Minimum
Cash and Cash Equivalents [Line Items]
Securities maturity period	14 months
Other assets | Maximum
Cash and Cash Equivalents [Line Items]
Securities maturity period	15 months
Cash and Cash Equivalents | Maximum
Cash and Cash Equivalents [Line Items]
Securities maturity period	90 days

Cash Equivalents and Investme_5

Cash Equivalents and Investments (Narrative) (Detail) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Cash and Cash Equivalents [Abstract]
Company owned life insurance (at contract value)	$ 49	$ 47

Derivative Instruments And He_3

Derivative Instruments And Hedging Activities - Schedule of Interest Rate Swap (Details) - Fair Value Hedging - Interest Rate Swap - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2024	Dec. 31, 2023
Derivative [Line Items]
Notional Amount	$ 2,550	$ 2,550
2014 Senior Notes due 2044
Derivative [Line Items]
Notional Amount	$ 300	$ 300
Floating Interest Rate	SOFR	SOFR
2017 Senior Notes due 2028
Derivative [Line Items]
Notional Amount	$ 500	$ 500
Floating Interest Rate	SOFR	SOFR
2020 Senior Notes due 2025
Derivative [Line Items]
Notional Amount	$ 300	$ 300
Floating Interest Rate	SOFR	SOFR
2018 Senior Notes due 2048
Derivative [Line Items]
Notional Amount	$ 300	$ 300
Floating Interest Rate	SOFR	SOFR
2018 Senior Notes due 2029
Derivative [Line Items]
Notional Amount	$ 400	$ 400
Floating Interest Rate	SOFR	SOFR
2022 Senior Notes due 2052
Derivative [Line Items]
Notional Amount	$ 500	$ 500
Floating Interest Rate	SOFR	SOFR
2022 Senior Notes due 2032
Derivative [Line Items]
Notional Amount	$ 250	$ 250
Floating Interest Rate	SOFR	SOFR

Derivative Instruments And He_4

Derivative Instruments And Hedging Activities - Summary of Net Gain (Loss) on Interest Rate Swaps Designated in Fair Value Hedge (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Derivative Instruments, Gain (Loss) [Line Items]
Interest expense, net	$ (60)	$ (66)	$ (185)	$ (185)
Designated as Hedging Instrument | Interest Rate Swap | Net interest settlements and accruals on interest rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
Net interest settlements and accruals on interest rate swaps	(25)	(25)	(74)	(64)
Designated as Hedging Instrument | Interest Rate Swap | Interest Expense
Derivative Instruments, Gain (Loss) [Line Items]
Fair value changes on interest rate swaps	79	(35)	57	(35)
Fair value changes on hedged debt	$ (79)	$ 35	$ (57)	$ 35

Derivative Instruments And He_5

Derivative Instruments And Hedging Activities - Additional Information (Detail) € in Millions, $ in Millions	Sep. 30, 2024 USD ($)	Sep. 30, 2024 EUR (€)	Dec. 31, 2023 USD ($)
Not Designated as Accounting Hedges | Total return swaps
Derivative [Line Items]
Notional Amount | $	$ 65		$ 58
1.75% 2015 Senior Notes, due 2027 | Net Investment Hedging | Designated as Hedging Instrument | Cross currency swaps
Derivative [Line Items]
Notional Amount		€ 500
2019 Senior Notes Due 2030 | Net Investment Hedging | Designated as Hedging Instrument | Cross currency swaps
Derivative [Line Items]
Notional Amount		€ 750

Derivative Instruments And He_6

Derivative Instruments And Hedging Activities - Summary of Notional Amounts of Outstanding Cross Currency Swap (Detail) - Cross currency swaps - Net Investment Hedging € in Millions, $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)	Sep. 30, 2024 EUR (€)	Dec. 31, 2023 EUR (€)
Currency Paid
Derivative [Line Items]
Notional Amount | €			€ 3,103	€ 2,903
Currency Paid | 3.67%
Derivative [Line Items]
Notional Amount | €			€ 965	€ 765
Weighted Average Interest Rate	2.91%	3.67%	2.91%	3.67%
Currency Paid | Based on ESTR
Derivative [Line Items]
Notional Amount | €			€ 2,138	€ 2,138
Floating Interest Rate	Based on ESTR	Based on ESTR
Currency Received
Derivative [Line Items]
Notional Amount | $	$ 3,264	$ 3,050
Currency Received | 5.25%
Derivative [Line Items]
Notional Amount | $	$ 1,014	$ 800
Weighted Average Interest Rate	4.41%	5.25%	4.41%	5.25%
Currency Received | Based on SOFR
Derivative [Line Items]
Notional Amount | $	$ 2,250	$ 2,250
Floating Interest Rate	Based on SOFR	Based on SOFR

Derivative Instruments And He_7

Derivative Instruments And Hedging Activities - Schedule of Notional Amount of Net Investment Hedges (Detail) - Cross currency swaps € in Millions, $ in Millions	Sep. 30, 2024 USD ($)	Sep. 30, 2024 EUR (€)	Dec. 31, 2023 USD ($)	Dec. 31, 2023 EUR (€)
Net Investment Hedging | Currency Paid
Derivative [Line Items]
Notional Amount | €		€ 3,103		€ 2,903
Net Investment Hedging | Currency Received
Derivative [Line Items]
Notional Amount | $	$ 3,264		$ 3,050
Net Investment Hedging | Designated as Hedging Instrument | Currency Paid
Derivative [Line Items]
Notional Amount | €		3,103
Net Investment Hedging | Designated as Hedging Instrument | Currency Received
Derivative [Line Items]
Notional Amount | $	3,264
2026 | Designated as Hedging Instrument | Currency Paid
Derivative [Line Items]
Notional Amount | €		450
2026 | Designated as Hedging Instrument | Currency Received
Derivative [Line Items]
Notional Amount | $	500
2027 | Designated as Hedging Instrument | Currency Paid
Derivative [Line Items]
Notional Amount | €		531
2027 | Designated as Hedging Instrument | Currency Received
Derivative [Line Items]
Notional Amount | $	550
2028 | Designated as Hedging Instrument | Currency Paid
Derivative [Line Items]
Notional Amount | €		588
2028 | Designated as Hedging Instrument | Currency Received
Derivative [Line Items]
Notional Amount | $	600
2029 | Designated as Hedging Instrument | Currency Paid
Derivative [Line Items]
Notional Amount | €		573
2029 | Designated as Hedging Instrument | Currency Received
Derivative [Line Items]
Notional Amount | $	614
2031 | Designated as Hedging Instrument | Currency Paid
Derivative [Line Items]
Notional Amount | €		481
2031 | Designated as Hedging Instrument | Currency Received
Derivative [Line Items]
Notional Amount | $	500
2032 | Designated as Hedging Instrument | Currency Paid
Derivative [Line Items]
Notional Amount | €		€ 480
2032 | Designated as Hedging Instrument | Currency Received
Derivative [Line Items]
Notional Amount | $	$ 500

Derivative Instruments And He_8

Derivative Instruments And Hedging Activities - Gains (Losses) Recognized in AOCI and Reclassified from AOCI on Derivatives (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Derivative Instruments, Gain (Loss) [Line Items]
Total, Amount of Gain/(Loss) Recognized in AOCI on Derivative, net of Tax	$ (136)	$ 93	$ (30)	$ 8
Cash Flow Hedging Relationships, Amount of Gain/(Loss) Reclassified from AOCI into Income, net of Tax	(1)	(1)	(2)	(1)
Total, Amount of Gain/(Loss) Reclassified from AOCI into Income, net of Tax	(1)	(1)	(2)	(1)
Gain Recognized in Income on Derivative (Amount Excluded from Effectiveness Testing)	12	13	34	43
Net Investment Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Net Investment Hedging Relationships, Amount of Gain/(Loss) Recognized in AOCI on Derivative, net of Tax	(136)	93	(30)	8
Net investment hedges - reclassification of gains included in net income - Net of Tax	0	0	0	0
Gain Recognized in Income on Derivative (Amount Excluded from Effectiveness Testing)	12	13	34	43
Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Cash Flow Hedging Relationships, Amount of Gain/(Loss) Recognized in AOCI on Derivative, net of Tax	0	0	0	0
Cash Flow Hedging Relationships, Amount of Gain/(Loss) Reclassified from AOCI into Income, net of Tax	(1)	(1)	(2)	(1)
Gain Recognized in Income on Derivative (Amount Excluded from Effectiveness Testing)	0	0	0	0
Cross currency swaps | Net Investment Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Net Investment Hedging Relationships, Amount of Gain/(Loss) Recognized in AOCI on Derivative, net of Tax	(95)	63	(20)	0
Net investment hedges - reclassification of gains included in net income - Net of Tax	0	0	0	0
Gain Recognized in Income on Derivative (Amount Excluded from Effectiveness Testing)	12	13	34	43
Cross currency swaps | Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Cash Flow Hedging Relationships, Amount of Gain/(Loss) Recognized in AOCI on Derivative, net of Tax	0	0	0	0
Cash Flow Hedging Relationships, Amount of Gain/(Loss) Reclassified from AOCI into Income, net of Tax	0	0	0	1
Gain Recognized in Income on Derivative (Amount Excluded from Effectiveness Testing)	0	0	0	0
Long-term debt | Net Investment Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Net Investment Hedging Relationships, Amount of Gain/(Loss) Recognized in AOCI on Derivative, net of Tax	(41)	30	(10)	8
Net investment hedges - reclassification of gains included in net income - Net of Tax	0	0	0	0
Gain Recognized in Income on Derivative (Amount Excluded from Effectiveness Testing)	0	0	0	0
Interest rate contracts | Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Cash Flow Hedging Relationships, Amount of Gain/(Loss) Recognized in AOCI on Derivative, net of Tax	0	0	0	0
Cash Flow Hedging Relationships, Amount of Gain/(Loss) Reclassified from AOCI into Income, net of Tax	(1)	(1)	(2)	(2)
Gain Recognized in Income on Derivative (Amount Excluded from Effectiveness Testing)	$ 0	$ 0	$ 0	$ 0

Derivative Instruments And He_9

Derivative Instruments And Hedging Activities - Cumulative Amount of Unrecognized Hedge Losses Recorded in AOCI (Detail) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Derivative [Line Items]
Cumulative Gains/(Losses), net of tax	$ (503)	$ (567)
Designated as Hedging Instrument
Derivative [Line Items]
Cumulative Gains/(Losses), net of tax	(19)	9
Net Investment Hedging | Designated as Hedging Instrument
Derivative [Line Items]
Cumulative Gains/(Losses), net of tax	23	53
Net Investment Hedging | Cross currency swaps | Designated as Hedging Instrument
Derivative [Line Items]
Cumulative Gains/(Losses), net of tax	1	21
Net Investment Hedging | FX forwards | Designated as Hedging Instrument
Derivative [Line Items]
Cumulative Gains/(Losses), net of tax	29	29
Net Investment Hedging | Long-term debt | Designated as Hedging Instrument
Derivative [Line Items]
Cumulative Gains/(Losses), net of tax	(7)	3
Cash Flow Hedging | Designated as Hedging Instrument
Derivative [Line Items]
Cumulative Gains/(Losses), net of tax	(42)	(44)
Cash Flow Hedging | Cross currency swaps | Designated as Hedging Instrument
Derivative [Line Items]
Cumulative Gains/(Losses), net of tax	1	1
Cash Flow Hedging | Interest rate contracts | Designated as Hedging Instrument
Derivative [Line Items]
Cumulative Gains/(Losses), net of tax	$ (43)	$ (45)

Derivative Instruments And H_10

Derivative Instruments And Hedging Activities - Summary of Notional Amounts of Outstanding Foreign Exchange Forwards (Detail) - Not Designated as Accounting Hedges € in Millions, ₨ in Millions, ¥ in Millions, £ in Millions, $ in Millions, $ in Millions, $ in Millions, $ in Millions	Sep. 30, 2024 USD ($)	Sep. 30, 2024 EUR (€)	Sep. 30, 2024 GBP (£)	Sep. 30, 2024 JPY (¥)	Sep. 30, 2024 CAD ($)	Sep. 30, 2024 SGD ($)	Sep. 30, 2024 INR (₨)	Sep. 30, 2024 AUD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2023 EUR (€)	Dec. 31, 2023 GBP (£)	Dec. 31, 2023 JPY (¥)	Dec. 31, 2023 CAD ($)	Dec. 31, 2023 SGD ($)	Dec. 31, 2023 INR (₨)	Dec. 31, 2023 AUD ($)
Contracts to sell USD for GBP
Derivative [Line Items]
Notional Amount	$ 567		£ 435						$ 513		£ 407
Contracts to sell USD for JPY
Derivative [Line Items]
Notional Amount	29			¥ 4,000					14			¥ 2,000
Contracts to sell USD for CAD
Derivative [Line Items]
Notional Amount	52				$ 70				147				$ 200
Contracts to sell USD for SGD
Derivative [Line Items]
Notional Amount	69					$ 90			50					$ 67
Contracts to sell USD for EUR
Derivative [Line Items]
Notional Amount	0	€ 0							60	€ 55
Contracts to sell USD for INR
Derivative [Line Items]
Notional Amount	23						₨ 1,900		23						₨ 1,900
Contracts to sell EUR for USD
Derivative [Line Items]
Notional Amount	17	€ 15							0	€ 0
Contracts to sell USD for AUD
Derivative [Line Items]
Notional Amount	0							$ 0	5							$ 8
Contracts to sell CAD for USD
Derivative [Line Items]
Notional Amount	$ 0				$ 0				$ 19				$ 25

Derivative Instruments And H_11

Derivative Instruments And Hedging Activities - Summary of Net Gain (Loss) on Foreign Exchange Forwards Not Designated as Hedging Instruments (Detail) - Not Designated as Accounting Hedges - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Other non-operating income, net | FX forwards
Derivative Instruments, Gain (Loss) [Line Items]
Foreign exchange forwards amount of gain (loss) recognized in income	$ 39	$ (25)	$ 21	$ (10)
Operating expense | Total return swaps
Derivative Instruments, Gain (Loss) [Line Items]
Foreign exchange forwards amount of gain (loss) recognized in income	1	(2)	5	(2)
SG&A expense | Total return swaps
Derivative Instruments, Gain (Loss) [Line Items]
Foreign exchange forwards amount of gain (loss) recognized in income	$ 1	$ (1)	$ 2	$ (1)

Derivative Instruments And H_12

Derivative Instruments And Hedging Activities - Fair Value of Derivative Instruments (Detail) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Derivatives, Fair Value [Line Items]
Assets	$ 17	$ 16
Liabilities	1,728	1,747
Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Liabilities	333	366
Designated as Hedging Instrument | Long-term debt | Net Investment Hedging
Derivatives, Fair Value [Line Items]
Liabilities	1,395	1,381
Designated as Hedging Instrument | Cross currency swaps | Other assets | Net Investment Hedging
Derivatives, Fair Value [Line Items]
Assets	0	3
Designated as Hedging Instrument | Cross currency swaps | Accounts payable and accrued liabilities | Net Investment Hedging
Derivatives, Fair Value [Line Items]
Liabilities	6	0
Designated as Hedging Instrument | Cross currency swaps | Other liabilities | Net Investment Hedging
Derivatives, Fair Value [Line Items]
Liabilities	207	183
Designated as Hedging Instrument | Interest Rate Swap | Other liabilities | Fair Value Hedging
Derivatives, Fair Value [Line Items]
Liabilities	120	183
Not Designated as Accounting Hedges | FX forwards | Other current assets
Derivatives, Fair Value [Line Items]
Assets	$ 17	$ 13

Goodwill And Other Acquired I_3

Goodwill And Other Acquired Intangible Assets - Activity in Goodwill (Detail) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Sep. 30, 2024	Dec. 31, 2023
Goodwill [Roll Forward]
Beginning balance, goodwill gross		$ 5,851
Beginning balance, Accumulated impairment charge		(12)
Beginning balance, goodwill net		5,839
Additions/ adjustments	$ 137	3
Foreign currency translation adjustments	55	114
Ending balance, goodwill gross	6,160	5,968
Ending balance, Accumulated impairment charge	(12)	(12)
Ending balance, goodwill net	6,148	5,956
MA
Goodwill [Roll Forward]
Beginning balance, goodwill gross		5,474
Beginning balance, Accumulated impairment charge		(12)
Beginning balance, goodwill net		5,462
Additions/ adjustments	39	90
Foreign currency translation adjustments	54	117
Ending balance, goodwill gross	5,774	5,681
Ending balance, Accumulated impairment charge	(12)	(12)
Ending balance, goodwill net	5,762	5,669
MIS
Goodwill [Roll Forward]
Beginning balance, goodwill gross		377
Beginning balance, Accumulated impairment charge		0
Beginning balance, goodwill net		377
Additions/ adjustments	98	(87)
Foreign currency translation adjustments	1	(3)
Ending balance, goodwill gross	386	287
Ending balance, Accumulated impairment charge	0	0
Ending balance, goodwill net	$ 386	$ 287

Goodwill And Other Acquired I_4

Goodwill And Other Acquired Intangible Assets - Acquired Intangible Assets and Related Amortization (Detail) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, net	$ 1,970	$ 2,049
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, gross	2,109	2,065
Accumulated amortization	(634)	(556)
Acquired intangible assets, net	1,475	1,509
Software/product technology
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, gross	691	674
Accumulated amortization	(420)	(364)
Acquired intangible assets, net	271	310
Database
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, gross	179	179
Accumulated amortization	(97)	(82)
Acquired intangible assets, net	82	97
Trade names
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, gross	207	199
Accumulated amortization	(83)	(72)
Acquired intangible assets, net	124	127
Other
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, gross	66	52
Accumulated amortization	(48)	(46)
Acquired intangible assets, net	$ 18	$ 6

Goodwill And Other Acquired I_5

Goodwill And Other Acquired Intangible Assets - Amortization Expense Relating to Acquired Intangible Assets (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense	$ 51	$ 49	$ 148	$ 150

Restructuring - Additional Info

Restructuring - Additional Information (Detail) - 2022-2023 Geolocation Restructuring Program - USD ($) $ in Millions	9 Months Ended	27 Months Ended
	Sep. 30, 2024	Dec. 31, 2024
Minimum | Forecast
Restructuring Cost and Reserve [Line Items]
Payments for restructuring		$ 145
Minimum | Estimated Annual Savings
Restructuring Cost and Reserve [Line Items]
Effect on future earnings, amount	$ 145
Maximum | Forecast
Restructuring Cost and Reserve [Line Items]
Payments for restructuring		$ 155
Maximum | Estimated Annual Savings
Restructuring Cost and Reserve [Line Items]
Effect on future earnings, amount	$ 165

Restructuring - Restructuring E

Restructuring - Restructuring Expenses Included in Consolidated Statements of Operations (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Restructuring Cost and Reserve [Line Items]
Restructuring	$ 6	$ 27	$ 13	$ 51
2022-2023 Geolocation Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring	6	27	13	51
Cost incurred to date	213		213
2022-2023 Geolocation Restructuring Program | Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring	6	17	13	39
Cost incurred to date	149		149
2022-2023 Geolocation Restructuring Program | Real Estate
Restructuring Cost and Reserve [Line Items]
Restructuring	0	10	0	12
Cost incurred to date	63		63
2022-2023 Geolocation Restructuring Program | Other Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring	0	$ 0	0	$ 0
Cost incurred to date	$ 1		$ 1

Fair Value - Financial Instrume

Fair Value - Financial Instruments Carried at Fair Value on Recurring Basis (Detail) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Assets:
Total	$ 139	$ 123
Liabilities:
Total	333	366
Derivatives
Assets:
Derivatives	17	16
Liabilities:
Derivatives	333	366
Money market funds/mutual funds
Assets:
Money market funds/mutual funds	122	107
Level 1
Assets:
Total	122	107
Liabilities:
Total	0	0
Level 1 | Derivatives
Assets:
Derivatives	0	0
Liabilities:
Derivatives	0	0
Level 1 | Money market funds/mutual funds
Assets:
Money market funds/mutual funds	122	107
Level 2
Assets:
Total	17	16
Liabilities:
Total	333	366
Level 2 | Derivatives
Assets:
Derivatives	17	16
Liabilities:
Derivatives	333	366
Level 2 | Money market funds/mutual funds
Assets:
Money market funds/mutual funds	$ 0	$ 0

OTHER BALANCE SHEET AND STATE_3

OTHER BALANCE SHEET AND STATEMENTS OF OPERATIONS INFORMATION - Additional Details Related to Certain Balance Sheet Captions (Detail) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Derivative [Line Items]
Salaries and benefits	$ 130	$ 130
Incentive compensation	321	345
Customer credits, advanced payments and advanced billings	136	105
Dividends	17	7
Professional service fees	56	46
Accounts payable	50	23
Income taxes	156	108
Pension and other retirement employee benefits	15	15
Accrued royalties	18	24
Restructuring liability	12	35
Derivative instruments designated as accounting hedges	6	0
Other	112	88
Accounts payable and accrued liabilities	1,133	1,076
Other current assets:
Prepaid taxes	73	115
Prepaid expenses	168	133
Capitalized costs to obtain and fulfill sales contracts	118	116
Foreign exchange forwards on certain assets and liabilities	17	13
Interest receivable on interest rate and cross currency swaps	51	79
Other	43	33
Total other current assets	470	489
Other assets:
Investments in non-consolidated affiliates	467	521
Deposits for real-estate leases	16	16
Indemnification assets related to acquisitions	112	111
Mutual funds and fixed deposits	113	100
Company owned life insurance (at contract value)	49	47
Costs to obtain sales contracts	202	196
Derivative instruments designated as accounting hedges	0	3
Pension and other retirement employee benefits	41	41
Other	86	103
Total other assets	1,086	1,138
Accounts payable and accrued liabilities:
Salaries and benefits	130	130
Incentive compensation	321	345
Customer credits, advanced payments and advanced billings	136	105
Dividends	17	7
Professional service fees	56	46
Accounts payable	50	23
Income taxes	156	108
Pension and other retirement employee benefits	15	15
Accrued royalties	18	24
Restructuring liability	12	35
Derivative instruments designated as accounting hedges	6	0
Other	112	88
Total accounts payable and accrued liabilities	1,133	1,076
Other liabilities:
Pension and other retirement employee benefits	199	190
Interest accrued on UTPs	45	36
MAKS indemnification provisions	19	19
Income tax liability - non-current portion	12	15
Derivative instruments designated as accounting hedges	327	366
Other	59	50
Total other liabilities	661	676
Swap
Derivative [Line Items]
Interest accrued on debt	52	67
Accounts payable and accrued liabilities:
Interest accrued on debt	52	67
Debt
Derivative [Line Items]
Interest accrued on debt	52	83
Accounts payable and accrued liabilities:
Interest accrued on debt	$ 52	$ 83

OTHER BALANCE SHEET AND STATE_4

OTHER BALANCE SHEET AND STATEMENTS OF OPERATIONS INFORMATION - Investments in Non-Consolidated Affiliates (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Other Balance Sheet And Statement Of Operations Information [Abstract]
Equity method investments	$ 131	$ 186
Investments measured using the measurement alternative	327	327
Other	9	8
Total investments in non-consolidated affiliates	$ 467	$ 521

OTHER BALANCE SHEET AND STATE_5

OTHER BALANCE SHEET AND STATEMENTS OF OPERATIONS INFORMATION - Other Non-Operating Interest (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Other Balance Sheet And Statement Of Operations Information [Abstract]
FX loss	$ 0	$ 2	$ (7)	$ (29)
Net periodic pension income - non-service and non-interest cost components	9	8	25	26
Income from investments in non-consolidated affiliates	8	9	10	12
Gain on previously held equity method investments	7	0	7	0
Gain on investments	4	0	12	11
Other	(3)	(1)	(2)	11
Total	$ 25	$ 18	$ 45	31
Loss recorded pursuant to an immaterial out-of-period adjustment, net of tax				23
Other non operating income (expense) other, favorable resolutions of various tax matters				$ 9

OTHER BALANCE SHEET AND STATE_6

OTHER BALANCE SHEET AND STATEMENTS OF OPERATIONS INFORMATION - Narrative (Details) - USD ($) $ in Millions	3 Months Ended				9 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Finite-Lived Intangible Assets [Line Items]
Charges related to asset abandonment		$ 15		$ 0	$ 30	$ 0
Employee Severance
Finite-Lived Intangible Assets [Line Items]
Charges related to asset abandonment			$ 15
Accelerated Amortization Charges Of Capitalized Software Assets
Finite-Lived Intangible Assets [Line Items]
Charges related to asset abandonment		$ 15
Accelerated Amortization Charges Of Capitalized Software Assets | Forecast
Finite-Lived Intangible Assets [Line Items]
Charges related to asset abandonment	$ 15

Comprehensive Income And Accu_3

Comprehensive Income And Accumulated Other Comprehensive Loss - Changes in Components of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	$ 3,938	$ 3,312	$ 3,476	$ 2,689
Ending Balance	4,068	3,352	4,068	3,352
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(617)	(570)	(567)	(643)
Other comprehensive income/(loss) before reclassifications	113	(82)	63	(8)
Amounts reclassified from AOCL	1	0	1	(1)
Other comprehensive income/(loss)	114	(82)	64	(9)
Ending Balance	(503)	(652)	(503)	(652)
Pension and Other Retirement Benefits
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(59)	(48)	(56)	(47)
Other comprehensive income/(loss) before reclassifications	0	1	(2)	1
Amounts reclassified from AOCL	0	(1)	(1)	(2)
Other comprehensive income/(loss)	0	0	(3)	(1)
Ending Balance	(59)	(48)	(59)	(48)
Cash Flow Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(43)	(45)	(44)	(45)
Other comprehensive income/(loss) before reclassifications	0	0	0	0
Amounts reclassified from AOCL	1	1	2	1
Other comprehensive income/(loss)	1	1	2	1
Ending Balance	(42)	(44)	(42)	(44)
Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(674)	(577)	(520)	(736)
Other comprehensive income/(loss) before reclassifications	249	(176)	95	(17)
Amounts reclassified from AOCL	0	0	0	0
Other comprehensive income/(loss)	249	(176)	95	(17)
Ending Balance	(425)	(753)	(425)	(753)
Net Investment Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	159	100	53	185
Other comprehensive income/(loss) before reclassifications	(136)	93	(30)	8
Amounts reclassified from AOCL	0	0	0	0
Other comprehensive income/(loss)	(136)	93	(30)	8
Ending Balance	$ 23	$ 193	$ 23	$ 193

Indebtedness - Summary of Total

Indebtedness - Summary of Total Indebtedness (Detail) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Principal Amount	$ 7,795	$ 7,281
Fair Value of Interest Rate Swap	(126)	(183)
Unamortized (Discount) Premium	(53)	(51)
Unamortized Debt Issuance Costs	(47)	(46)
Carrying Value	7,569	7,001
Current portion	(693)	0
Long-term debt	$ 6,876	$ 7,001
5.25% 2014 Senior Notes, due 2044
Debt Instrument [Line Items]
Notes payable, interest rate	5.25%	5.25%
Principal Amount	$ 600	$ 600
Fair Value of Interest Rate Swap	(26)	(34)
Unamortized (Discount) Premium	3	3
Unamortized Debt Issuance Costs	(4)	(4)
Carrying Value	$ 573	$ 565
1.75% 2015 Senior Notes, due 2027
Debt Instrument [Line Items]
Notes payable, interest rate	1.75%	1.75%
Principal Amount	$ 558	$ 552
Fair Value of Interest Rate Swap	0	0
Unamortized (Discount) Premium	0	0
Unamortized Debt Issuance Costs	(1)	(1)
Carrying Value	$ 557	$ 551
3.25% 2017 Senior Notes, due 2028
Debt Instrument [Line Items]
Notes payable, interest rate	3.25%	3.25%
Principal Amount	$ 500	$ 500
Fair Value of Interest Rate Swap	(14)	(26)
Unamortized (Discount) Premium	(2)	(2)
Unamortized Debt Issuance Costs	(1)	(2)
Carrying Value	$ 483	$ 470
4.25% 2018 Senior Notes, due 2029
Debt Instrument [Line Items]
Notes payable, interest rate	4.25%	4.25%
Principal Amount	$ 400	$ 400
Fair Value of Interest Rate Swap	(25)	(34)
Unamortized (Discount) Premium	(1)	(2)
Unamortized Debt Issuance Costs	(1)	(2)
Carrying Value	$ 373	$ 362
4.875% 2018 Senior Notes, due 2048
Debt Instrument [Line Items]
Notes payable, interest rate	4.875%	4.875%
Principal Amount	$ 400	$ 400
Fair Value of Interest Rate Swap	(29)	(36)
Unamortized (Discount) Premium	(6)	(6)
Unamortized Debt Issuance Costs	(3)	(3)
Carrying Value	$ 362	$ 355
0.950% Senior Notes Due 2030
Debt Instrument [Line Items]
Notes payable, interest rate	0.95%	0.95%
Principal Amount	$ 837	$ 829
Fair Value of Interest Rate Swap	0	0
Unamortized (Discount) Premium	(2)	(2)
Unamortized Debt Issuance Costs	(3)	(4)
Carrying Value	$ 832	$ 823
3.75% 2020 Senior Notes, due 2025
Debt Instrument [Line Items]
Notes payable, interest rate	3.75%	3.75%
Principal Amount	$ 700	$ 700
Fair Value of Interest Rate Swap	(6)	(16)
Unamortized (Discount) Premium	0	(1)
Unamortized Debt Issuance Costs	(1)	(1)
Carrying Value	$ 693	$ 682
3.25% 2020 Senior Notes, due 2050
Debt Instrument [Line Items]
Notes payable, interest rate	3.25%	3.25%
Principal Amount	$ 300	$ 300
Fair Value of Interest Rate Swap	0	0
Unamortized (Discount) Premium	(4)	(4)
Unamortized Debt Issuance Costs	(3)	(3)
Carrying Value	$ 293	$ 293
2.55% 2020 Senior Notes, due 2060
Debt Instrument [Line Items]
Notes payable, interest rate	2.55%	2.55%
Principal Amount	$ 300	$ 300
Fair Value of Interest Rate Swap	0	0
Unamortized (Discount) Premium	(2)	(2)
Unamortized Debt Issuance Costs	(3)	(3)
Carrying Value	$ 295	$ 295
2.00% 2021 Senior Notes, due 2031
Debt Instrument [Line Items]
Notes payable, interest rate	2%	2%
Principal Amount	$ 600	$ 600
Fair Value of Interest Rate Swap	0	0
Unamortized (Discount) Premium	(6)	(6)
Unamortized Debt Issuance Costs	(4)	(4)
Carrying Value	$ 590	$ 590
2.75% 2021 Senior Notes, due 2041
Debt Instrument [Line Items]
Notes payable, interest rate	2.75%	2.75%
Principal Amount	$ 600	$ 600
Fair Value of Interest Rate Swap	0	0
Unamortized (Discount) Premium	(12)	(12)
Unamortized Debt Issuance Costs	(5)	(5)
Carrying Value	$ 583	$ 583
3.10% 2021 Senior Notes, due 2061
Debt Instrument [Line Items]
Notes payable, interest rate	3.10%	3.10%
Principal Amount	$ 500	$ 500
Fair Value of Interest Rate Swap	0	0
Unamortized (Discount) Premium	(7)	(7)
Unamortized Debt Issuance Costs	(5)	(5)
Carrying Value	$ 488	$ 488
3.75% 2022 Senior Notes, due 2052
Debt Instrument [Line Items]
Notes payable, interest rate	3.75%	3.75%
Principal Amount	$ 500	$ 500
Fair Value of Interest Rate Swap	(21)	(29)
Unamortized (Discount) Premium	(8)	(8)
Unamortized Debt Issuance Costs	(5)	(5)
Carrying Value	$ 466	$ 458
4.25% 2022 Senior Notes, due 2032
Debt Instrument [Line Items]
Notes payable, interest rate	4.25%	4.25%
Principal Amount	$ 500	$ 500
Fair Value of Interest Rate Swap	(5)	(8)
Unamortized (Discount) Premium	(2)	(2)
Unamortized Debt Issuance Costs	(3)	(4)
Carrying Value	$ 490	$ 486
5.00% 2024 Senior Notes, due 2034
Debt Instrument [Line Items]
Notes payable, interest rate	5%
Principal Amount	$ 500
Fair Value of Interest Rate Swap	0
Unamortized (Discount) Premium	(4)
Unamortized Debt Issuance Costs	(5)
Carrying Value	$ 491

Indebtedness - Additional Infor

Indebtedness - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2024
Debt Disclosure [Abstract]
Debt instrument, covenant compliance	At September 30, 2024, the Company was in compliance with all covenants contained within all of the debt agreements. All of the debt agreements contain cross default provisions which state that default under one of the aforementioned debt instruments could in turn permit lenders under other debt instruments to declare borrowings outstanding under those instruments to be immediately due and payable. As of September 30, 2024, there were no such cross defaults.

Indebtedness - Principal Paymen

Indebtedness - Principal Payments Due on Long-Term Borrowings (Detail) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Debt Disclosure [Abstract]
2024 (After September 30,)	$ 0
2025	700
2026	0
2027	558
2028	500
Thereafter	6,037
Total principal payment	$ 7,795	$ 7,281

Indebtedness - Summary of Compo

Indebtedness - Summary of Components of Interest as Presented in Consolidated Statements of Operations (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Debt Disclosure [Abstract]
Income	$ 28	$ 19	$ 73	$ 44
Expense on borrowings	(79)	(75)	(227)	(220)
Income (expense) on UTPs and other tax related liabilities	(3)	(4)	(12)	10
Net periodic pension costs - interest component	(6)	(6)	(19)	(19)
Interest expense, net	(60)	(66)	(185)	(185)
Interest paid	$ 83	$ 87	$ 234	230
Unrecognized tax benefits, income tax penalties and interest expense, reduction of tax-related interest expense related to resolution of tax matters				$ 22

Indebtedness - Fair Value and C

Indebtedness - Fair Value and Carrying Value of Long-Term Debt (Detail) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Carrying Value	$ 7,569	$ 7,001
Level 2
Debt Instrument [Line Items]
Estimated Fair Value	$ 7,066	$ 6,402

Leases - Additional Information

Leases - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Lessee, Lease, Description [Line Items]
Restructuring charges	$ 6	$ 27	$ 13	$ 51
2022-2023 Geolocation Restructuring Program
Lessee, Lease, Description [Line Items]
Restructuring charges	6	27	13	51
Real Estate | 2022-2023 Geolocation Restructuring Program
Lessee, Lease, Description [Line Items]
Restructuring charges	$ 0	$ 10	$ 0	$ 12
Minimum
Lessee, Lease, Description [Line Items]
Lessee, operating lease, renewal term (years)	1 year		1 year
Maximum
Lessee, Lease, Description [Line Items]
Lessee, operating lease, renewal term (years)	20 years		20 years

Leases - Components of Lease Co

Leases - Components of Lease Cost (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Lease, Cost [Abstract]
Operating lease cost	$ 23	$ 23	$ 66	$ 70
Sublease income	(1)	(1)	(5)	(5)
Variable lease cost	5	6	16	16
Total lease cost	$ 27	$ 28	$ 77	$ 81

Leases - Operating Leases Infor

Leases - Operating Leases Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Leases [Abstract]
Cash paid for amounts included in the measurement of operating lease liabilities	$ 31	$ 30	$ 90	$ 90
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 15	$ 1	$ 20	$ 25
Weighted-average remaining lease term (years)	4 years	4 years 7 months 6 days	4 years	4 years 7 months 6 days
Weighted-average discount rate applied to operating leases (percent)	3.20%	3.20%	3.20%	3.20%

Leases - Operating Leases, Futu

Leases - Operating Leases, Future Minimum Payment (Detail) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Leases [Abstract]
2024 (After September 30,)	$ 30
2025	113
2026	93
2027	75
2028	24
2028	41
Total lease payments (undiscounted)	376
Less: Interest	22
Present value of lease liabilities:	354
Lease liabilities - current	109	$ 108
Lease liabilities - noncurrent	$ 245	$ 306

Contingencies - Additional Info

Contingencies - Additional Information (Detail) $ in Millions	Sep. 03, 2024 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Payments for legal settlements	$ 20

Segment Information - Additiona

Segment Information - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2024 segment
Segment Reporting Information [Line Items]
Number of operating segments (segment)	2
Number of reportable segments	2

Segment Information - Financial

Segment Information - Financial Information by Segment (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Segment Reporting Information, Operating Income (Loss) [Abstract]
Revenue	$ 1,813	$ 1,472	$ 5,416	$ 4,436
Operating, SG&A	946	815	2,741	2,470
Adjusted Operating Income	867	657	2,675	1,966
Depreciation and amortization	108	95	318	276
Restructuring	6	27	13	51
Charges related to asset abandonment	15	0	30	0
Operating income	738	535	2,314	1,639
Eliminations
Segment Reporting Information, Operating Income (Loss) [Abstract]
Revenue	(51)	(50)	(154)	(148)
Operating, SG&A	(51)	(50)	(154)	(148)
Adjusted Operating Income	0	0	0	0
Depreciation and amortization	0	0	0	0
Restructuring	0	0	0	0
Charges related to asset abandonment	0	0	0	0
MA
Segment Reporting Information, Operating Income (Loss) [Abstract]
Revenue	831	776	2,432	2,260
MA | Eliminations
Segment Reporting Information, Operating Income (Loss) [Abstract]
Revenue	3	3	10	10
MA | Operating Segments
Segment Reporting Information, Operating Income (Loss) [Abstract]
Revenue	834	779	2,442	2,270
Operating, SG&A	581	517	1,721	1,584
Adjusted Operating Income	253	262	721	686
Depreciation and amortization	88	76	260	220
Restructuring	4	22	7	38
Charges related to asset abandonment	15	0	30	0
MIS
Segment Reporting Information, Operating Income (Loss) [Abstract]
Revenue	982	696	2,984	2,176
MIS | Eliminations
Segment Reporting Information, Operating Income (Loss) [Abstract]
Revenue	48	47	144	138
MIS | Operating Segments
Segment Reporting Information, Operating Income (Loss) [Abstract]
Revenue	1,030	743	3,128	2,314
Operating, SG&A	416	348	1,174	1,034
Adjusted Operating Income	614	395	1,954	1,280
Depreciation and amortization	20	19	58	56
Restructuring	2	5	6	13
Charges related to asset abandonment	$ 0	$ 0	$ 0	$ 0

Segment Information - Cumulativ

Segment Information - Cumulative Restructuring Expense (Details) - 2022-2023 Geolocation Restructuring Program $ in Millions	Sep. 30, 2024 USD ($)
Segment Reporting Information [Line Items]
Cost incurred to date	$ 213
MA
Segment Reporting Information [Line Items]
Cost incurred to date	115
MIS
Segment Reporting Information [Line Items]
Cost incurred to date	$ 98

Segment Information - Consolida

Segment Information - Consolidated Revenue Information by Geographic Area (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Segment Reporting Information [Line Items]
Revenue	$ 1,813	$ 1,472	$ 5,416	$ 4,436
United States
Segment Reporting Information [Line Items]
Revenue	999	762	2,942	2,300
Non-U.S.
Segment Reporting Information [Line Items]
Revenue	814	710	2,474	2,136
EMEA
Segment Reporting Information [Line Items]
Revenue	546	465	1,654	1,404
Asia-Pacific
Segment Reporting Information [Line Items]
Revenue	157	143	476	437
Americas
Segment Reporting Information [Line Items]
Revenue	$ 111	$ 102	$ 344	$ 295