v3.26.3
Capital Stock - Schedule of Stock Option Activity (Details)
$ / shares in Units, shares in Millions, $ in Millions
 9 Months Ended
Sep. 30, 2026
USD ($)
$ / shares
shares
Number of Shares  
Outstanding at beginning of period (in shares) | shares 3.1
Granted (in shares) | shares 0.9
Exercised (in shares) | shares (0.2)
Forfeited or expired (in shares) | shares (0.2)
Outstanding at end of period (in shares) | shares 3.6
Weighted- Average Option Price per Share  
Outstanding at beginning of period (in dollars per share) | $ / shares $ 373.90
Granted (in dollars per share) | $ / shares 296.14
Exercised (in dollars per share) | $ / shares 222.90
Forfeited or expired (in dollars per share) | $ / shares 389.88
Outstanding at end of period (in dollars per share) | $ / shares $ 362.09
Stock Options, Additional Disclosures  
Exercisable at end of period (in shares) | shares 2.2
Exercisable at end of period (in dollars per share) | $ / shares $ 373.99
Outstanding at end of period, Weighted-Average Remaining Contractual Life 6 years 14 days
Exercisable at end of period, Weighted-Average Remaining Contractual Life 4 years 5 months 8 days
Outstanding at end of period, Aggregate Intrinsic Value | $ $ 200
Exercisable at end of period, Aggregate Intrinsic Value | $ $ 119