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STOCK PROGRAMS - Long-term Price Vested Units (Details) - Long-Term Price-Vested Units - Employee - Common Class A - Executive Officer
$ in Millions
1 Months Ended
Mar. 31, 2021
USD ($)
shares
Share-based Compensation Arrangement by Share-based Payment Award  
Payout for performance share units in Class A Common Stock (in shares) | shares 85,927
Consecutive trading days 20 days
Grant date fair value $ 20
Unrecognized compensation cost $ 20
Recognition period 3 years 3 months 18 days