XML 25 R13.htm IDEA: XBRL DOCUMENT v3.21.1
Units Outstanding
 3 Months Ended
Mar. 31, 2021
Equity [Abstract]  
Units Outstanding Units Outstanding
Changes in AB Holding Units outstanding during the three-month period ended March 31, 2021 are as follows:
Outstanding as of December 31, 202098,322,942 
Options exercised79,108 
Units issued2,847,552 
Units retired(759,753)
Outstanding as of March 31, 2021100,489,849