Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Net income	$ 2,582	$ 1,403	$ 975
Other comprehensive income (loss):
Fair market value adjustment on cash flow hedges	(15)	8	7
Tax impacts of cash flow hedges, net	(2)	(5)	(7)
Unrealized (losses) gains on defined benefit pension plans	(78)	67	(8)
Tax impacts of defined benefit pension plans, net	18	(17)	2
Foreign currency translation	(421)	(497)	(186)
Reclassification adjustment for accumulated foreign currency translation impacts from the sale of a foreign entity included in loss on sale of business	56	0	0
Tax impacts of foreign currency translation, net (see Note 13)	(73)	36	0
Total other comprehensive income (loss)	(494)	(397)	(172)
Comprehensive income	2,088	1,006	803
Less: net income attributable to noncontrolling interests and redeemable noncontrolling interests	52	69	17
Less: other comprehensive (loss) income attributable to noncontrolling interests	(50)	(39)	35
Comprehensive income attributable to Fiserv, Inc.	2,086	976	751
Cost of Processing and Services
Other comprehensive income (loss):
Reclassification adjustment for net realized (gains) losses on cash flow hedges	2	(10)	(1)
Interest Expense
Other comprehensive income (loss):
Reclassification adjustment for net realized (gains) losses on cash flow hedges	$ 19	$ 21	$ 21