0000798354 2021-10-27 2021-10-27 0000798354 us-gaap:CommonStockMember 2021-10-27 2021-10-27 0000798354 fisv:SeniorNotesDue2023Member 2021-10-27 2021-10-27 0000798354 fisv:SeniorNotesDue2027Member 2021-10-27 2021-10-27 0000798354 fisv:SeniorNotesDue2030Member 2021-10-27 2021-10-27 0000798354 fisv:SeniorNotesDue2025Member 2021-10-27 2021-10-27 0000798354 fisv:SeniorNotesDue2031Member 2021-10-27 2021-10-27 0000798354 false 8-K 2021-10-27 Fiserv, Inc. WI 1-38962 39-1506125 255 Fiserv Drive Brookfield WI 53045 262 879-5000 false false false false Common Stock, par value $0.01 per share FISV NASDAQ 0.375% Senior Notes due 2023 FISV23 NASDAQ 1.125% Senior Notes due 2027 FISV27 NASDAQ 1.625% Senior Notes due 2030 FISV30 NASDAQ 2.250% Senior Notes due 2025 FISV25 NASDAQ 3.000% Senior Notes due 2031 FISV31 NASDAQ false