Capital Stock (Tables)

12 Months Ended

Dec. 31, 2023

Capital Stock [Abstract]

Schedule of Fair Value Assumptions

Option Value and Assumptions
	2023			2022			2021
Weighted-average fair value per share	$	83.59		$	68.08		$	53.35
Assumptions:
Risk-free interest rate	4.0		%	1.8		%	0.8		%
Expected dividend yield	1.2		%	1.0		%	1.2		%
Expected stock price volatility	29.0		%	27.0		%	26.9		%
Expected option life (years)	6.2			5.9			5.9

Summary of Stock Option Activity

2023 Stock Option Activity
	Shares (in millions)	Weighted-Average Exercise Price		Weighted-Average Remaining Term (in years)	Aggregate Intrinsic  Value
Outstanding January 1	12.1	$	168.80
Granted	1.6	268.28
Exercised	(2.0)	117.64
Canceled or forfeited	(0.2)	235.73
Outstanding December 31	11.5	$	189.70	5.4	$	1,257.1
Exercisable December 31	6.8	$	153.01	3.1	$	1,001.1
Options expected to vest	4.3	$	243.26	7.8	$	242.2

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
	RSUs	PSUs	RSUs		PSUs
Nonvested on January 1	0.7	0.2	$	232.02	$	234.70
Granted	0.4	0.1	257.09		255.27
Vested	(0.3)	(0.1)	227.85		217.73
Canceled or forfeited	(0.1)	—	244.09		217.73
Nonvested on December 31	0.7	0.2	$	246.98	$	250.17