XML 74 R62.htm IDEA: XBRL DOCUMENT v3.21.1
Stock Option Plans - Stock Option Activity and Related Information (Detail)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended
Mar. 31, 2021
USD ($)
$ / shares
shares
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]  
Shares Under Option, Beginning balance | shares 7.5
Shares Under Option, Granted | shares 1.6
Shares Under Option, Exercised | shares (0.7)
Shares Under Option, Ending balance | shares 8.4
Shares Under Option, Exercisable at end of year | shares 2.8
Shares Under Option, Ending unvested and expected to vest | shares 5.1
Weighted Average Exercise Price, Beginning balance | $ / shares $ 65.09
Weighted Average Exercise Price, Granted | $ / shares 127.90
Weighted Average Exercise Price, Exercised | $ / shares 49.64
Weighted Average Exercise Price, Ending balance | $ / shares 78.48
Weighted Average Exercise Price, Exercisable at end of year | $ / shares 50.60
Weighted Average Exercise Price, Ending unvested and expected to vest | $ / shares $ 91.34
Weighted Average Remaining Contractual Term (in years), Ending balance 4 years 5 months 1 day
Weighted Average Remaining Contractual Term (in years), Exercisable at end of year 2 years 2 months 26 days
Weighted Average Remaining Contractual Term (in years), Ending unvested and expected to vest 5 years 5 months 15 days
Aggregate Intrinsic Value, Ending Balance | $ $ 395.7
Aggregate Intrinsic Value, Exercisable at end of year | $ 208.0
Aggregate Intrinsic Value, Ending unvested and expected to vest | $ $ 176.5