XML 17 R7.htm IDEA: XBRL DOCUMENT v3.21.2
Consolidated Balance Sheets (Parenthetical) - $ / shares
Sep. 30, 2021
Dec. 31, 2020
Fiserv, Inc. Shareholders’ Equity:    
Preferred stock, shares authorized (in shares) 25,000,000 25,000,000
Preferred stock, shares issued (in shares) 0 0
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares authorized (in shares) 1,800,000,000 1,800,000,000
Common stock, shares issued (in shares) 784,000,000 789,000,000
Treasury stock (in shares) 124,000,000 121,000,000