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Stock-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	May 31, 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant	6,700
Employee Stock Purchase Plan [Abstract]
Maximum contribution allowed under employee stock purchase plan as % of employee's earnings	15.00%
Total number of shares purchased under employee stock purchase plan	1,600
Plan period employee stock purchase plan, in months	3 months
Purchase price calculation for shares of stock under employee stock purchase plan	The purchase price for each share of stock is the lesser of 90% of the market price on the first day of the plan period or 100% of the market price on the last day of the plan period.
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Total intrinsic value of options exercised in the period	$ 43	$ 45	$ 45
Proceeds from stock plans	46	$ 59	$ 46
Intrinsic value of options outstanding	$ 118
Weighted-average remaining contractual term of options exercisable	5 years 6 months
Intrinsic value of options exercisable	$ 71
Number of options exercisable	331	500	700
Weighted-average exercise price of exercisable options	$ 162.09	$ 154.16	$ 134.94
Options Vested and Expected to Vest [Abstract]
Number of options outstanding which are vested and expected to vest	700
Aggregate intrinsic value of outstanding options which are vested and expect to vest	$ 117
Weighted-average exercise price of outstanding options which are vested and expected to vest	$ 201.85
Weighted-average remaining contractual term of outstanding options which are vested and expected to vest	6 years 10 months 24 days
Unrecognized compensation costs on unvested options	$ 19
Employee Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation costs	$ 1	$ 1	$ 1
Maximum [Member]
Non-Employee Stock Purchase Plan Awards [Abstract]
Incremental stock-based compensation cost due to acceleration of awards		1	1
Restricted Stock Unit Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Granted	88
Stock-based compensation costs	$ 17	$ 15	$ 14
Options Vested and Expected to Vest [Abstract]
Weighted-average period of recognition for unrecognized compensation costs on nonvested awards	3 years 3 months 18 days
Unvested Awards Roll Forward
Weighted-average grant date fair value of shares granted	$ 283.10
Unvested shares at end of period	245	271
Unrecognized compensation costs on unvested awards	$ 41
Performance Stock Unit Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Granted	41	58	13
Stock-based compensation costs	$ 3	$ 6	$ 7
Options Vested and Expected to Vest [Abstract]
Weighted-average period of recognition for unrecognized compensation costs on nonvested awards	2 years
Unvested Awards Roll Forward
Weighted-average grant date fair value of shares granted	$ 315.98
Unvested shares at end of period	87	95
Unrecognized compensation costs on unvested awards	$ 12
Performance Stock Unit Plan [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights	0.00%
Performance Stock Unit Plan [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights	200.00%
Restricted Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Granted	4	6	5
Stock-based compensation costs	$ 1	$ 1	$ 1
Unvested Awards Roll Forward
Weighted-average grant date fair value of shares granted	$ 256.28	$ 229.67	$ 183.41
Unvested shares at end of period	3
Equity Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	5 years
Award expiration period	10 years
Options Vested and Expected to Vest [Abstract]
Weighted-average period of recognition for unrecognized compensation costs on nonvested awards	3 years 6 months
Employee Stock Purchase Plan of 2009 [Member] | Employee Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized under plan				800

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