The Company’s disaggregated net revenue by source and geographic region were as follows for the years ended December 31:



	2020		2019		2018
	(in millions)

Revenue by source:
Domestic assessments	$	6,656	$	6,781	$	6,138
Cross-border volume fees	3,512		5,606		4,954
Transaction processing	8,731		8,469		7,391
Other revenues	4,717		4,124		3,348
Gross revenue	23,616		24,980		21,831
Rebates and incentives (contra-revenue)	(8,315)		(8,097)		(6,881)
Net revenue	$	15,301	$	16,883	$	14,950

Net revenue by geographic region:
North American Markets	$	5,424	$	5,843	$	5,312
International Markets	9,701		10,869		9,514
Other 1	176		171		124
Net revenue	$	15,301	$	16,883	$	14,950