Annual report pursuant to Section 13 and 15(d)

STOCK-BASED COMPENSATION - Options to Purchase Shares of Class A Common Stock Issued and Outstanding (Detail)

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STOCK-BASED COMPENSATION - Options to Purchase Shares of Class A Common Stock Issued and Outstanding (Detail)
$ / shares in Units, shares in Thousands, $ in Millions
12 Months Ended
Dec. 31, 2020
USD ($)
$ / shares
shares
Shares  
Ending Balance | shares 1,564
Exercisable at December 31, 2020 | shares 801
Weighted-Average Exercise Price  
Ending Balance | $ / shares $ 103.60
Exercisable at December 31, 2020 | $ / shares $ 101.33
Weighted-Average  Remaining Contractual Term (in years)  
Outstanding at December 31, 2020 6 years 10 months 2 days
Nonqualified Stock Options  
Shares  
Beginning Balance | shares 1,498
Exercised | shares (375)
Granted | shares 441
Forfeited / Expired | shares 0
Ending Balance | shares 1,564
Options Vested and Expected to Vest | shares 1,564
Exercisable at December 31, 2020 | shares 801
Weighted-Average Exercise Price  
Beginning Balance | $ / shares $ 100.74
Exercised | $ / shares 92.76
Granted | $ / shares 104.10
Forfeited / Expired | $ / shares 0
Ending Balance | $ / shares 103.60
Options Vested and Expected to Vest | $ / shares 103.60
Exercisable at December 31, 2020 | $ / shares $ 101.33
Weighted-Average  Remaining Contractual Term (in years)  
Outstanding at December 31, 2020 6 years 10 months 2 days
Options Vested and Expected to Vest 6 years 10 months 2 days
Exercisable at December 31, 2020 5 years 5 months 15 days
Aggregate Intrinsic Value  
Outstanding at December 31, 2020 | $ $ 101
Options Vested and Expected to Vest | $ 101
Exercisable at December 31, 2020 | $ $ 54