Deferred Revenue (Tables)

9 Months Ended

Sep. 30, 2022

Revenue from Contract with Customer [Abstract]

Schedule of Changes in Deferred Revenue

The changes in our deferred revenue during the nine months ended September 30, 2022 are as follows (in millions):

	Annual Listings Revenues		Original Listings Revenues		Other Listings Revenues		Data Services and Other Revenues		Mortgage Technology		Total
Deferred revenue balance at December 31, 2021	$	—	$	19	$	93	$	93	$	79	$	284
Additions	434		32		39		330		62		897
Amortization	(327)		(28)		(33)		(301)		(82)		(771)
Deferred revenue balance at September 30, 2022	$	107	$	23	$	99	$	122	$	59	$	410

The changes in our deferred revenue during the nine months ended September 30, 2021 are as follows (in millions):

	Annual Listings Revenues		Original Listings Revenues		Other Listings Revenues		Data Services and Other Revenues		Mortgage Technology		Total
Deferred revenue balance at December 31, 2020	$	—	$	13	$	92	$	95	$	59	$	259
Additions	397		26		42		352		60		877
Amortization	(301)		(24)		(31)		(319)		(39)		(714)
Deferred revenue balance at September 30, 2021	$	96	$	15	$	103	$	128	$	80	$	422