CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 2,462	$ 2,059	$ 1,608
Foreign Currency Adjustments:
Foreign currency translation adjustment - Pre Tax	594	(309)	213
Foreign currency translation adjustment - Tax	(2)	(3)	(1)
Foreign currency translation adjustment - Net of Tax	592	(312)	212
Net (losses) gains on net investment hedges - Pre Tax	(629)	299	(177)
Net (losses) gains on net investment hedges - Tax	160	(77)	45
Net (losses) gains on net investment hedges - Net of Tax	(469)	222	(132)
Cash Flow Hedges:
Reclassification of losses included in net income - Pre Tax	2	3	2
Reclassification of losses included in net income - Tax	(1)	(1)	(1)
Reclassification of losses included in net income - Net of Tax	1	2	1
Pension and Other Retirement Benefits:
Amortization of actuarial losses/prior service costs and settlement charge included in net income - Pre Tax	(2)	(2)	(3)
Amortization of actuarial losses and prior service costs and settlement charge included in net income - Tax	0	0	0
Amortization of actuarial losses and prior service costs and settlement charge included in net income - Net of Tax	(2)	(2)	(3)
Net actuarial (losses) gains and prior service costs - Pre Tax	9	25	(8)
Net actuarial (losses) gains and prior service costs - Tax	(2)	(6)	2
Net actuarial (losses) gains and prior service costs - Net of Tax	7	19	(6)
Total other comprehensive (loss) income - Pre Tax	(26)	16	27
Total other comprehensive (loss)income - Tax	155	(87)	45
Total Other Comprehensive Income (Loss)	129	(71)	72
Comprehensive Income	2,591	1,988	1,680
Less: comprehensive loss attributable to noncontrolling interests	(9)	0	(4)
Comprehensive Income Attributable to Moody’s	$ 2,600	$ 1,988	$ 1,684