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Units Outstanding
12 Months Ended
Dec. 31, 2021
Equity [Abstract]  
Units Outstanding Units Outstanding
Changes in AB Units outstanding for the years ended December 31, 2021 and 2020 were as follows:
20212020
Outstanding as of January 1,270,509,658 270,380,314 
Options exercised143,211 5,182 
Units issued3,917,437 3,363,132 
Units retired(1)
(3,117,263)(3,238,970)
Outstanding as of December 31,271,453,043 270,509,658 
(1)During 2021 and 2020, we purchased 5,400 and 1,500 AB Units, respectively, in private transactions and retired them.