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Capital Stock (Tables)
12 Months Ended
Dec. 31, 2022
Capital Stock [Abstract]  
Schedule of Fair Value Assumptions
Option Value and Assumptions
202220212020
Weighted-average fair value per share$68.08 $53.35 $39.34 
Assumptions:
Risk-free interest rate1.8 %0.8 %1.4 %
Expected dividend yield1.0 %1.2 %1.0 %
Expected stock price volatility27.0 %26.9 %18.9 %
Expected option life (years)5.95.95.8
Summary of Stock Option Activity
2022 Stock Option Activity
Shares
(in millions)
Weighted
Average
Exercise Price
Weighted-Average
Remaining
Term (in years)
Aggregate
Intrinsic
 Value
Outstanding January 112.1 $150.17 
Granted1.9 248.36 
Exercised(1.5)102.85 
Canceled or forfeited(0.4)220.16 
Outstanding December 3112.1 $168.80 5.4$925.3 
Exercisable December 317.2 $131.38 3.1$819.2 
Options expected to vest4.4 $222.62 7.7$102.5 
Summary of RSU and PSU Activity
Restricted Stock Units (RSUs) and Performance Stock Units (PSUs) Activity
Shares
(in millions)
Weighted Average
Grant Date Fair Value
RSUsPSUsRSUsPSUs
Nonvested on January 10.7 0.2 $213.16 $210.73 
Granted0.4 0.1 239.76 237.17 
Vested(0.3)(0.1)204.62 179.35 
Canceled or forfeited(0.1)— 225.83 179.35 
Nonvested on December 310.7 0.2 $232.02 $234.70