RELATED PARTY TRANSACTIONS	12 Months Ended
	Dec. 31, 2020
Related Party Transactions [Abstract]
RELATED PARTY TRANSACTIONS	RELATED PARTY TRANSACTIONSMoody’s Corporation made grants of $11 million to The Moody’s Foundation during the year ended December 31, 2020. The Company did not make any grants to the Foundation in the years ended December 31, 2019 and 2018. The Foundation carries out philanthropic activities primarily in the areas of education and health and human services. Certain members of Moody’s senior management are on the board of the Foundation.