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Stock-Based Compensation Plans - Additional Information (Detail) - USD ($) shares in Millions, $ in Millions		12 Months Ended
	Sep. 15, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
RMS
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of equity interest in RMS prior to obtaining a controlling interest	$ 33
Consideration transferred	5
Share-based payment arrangement, expense	$ 28
Equity Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense		$ 14
Weighted average period to recognize expense		2 years
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense		$ 216
Weighted average period to recognize expense		2 years 4 months 24 days
Performance Based Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense		$ 22
Weighted average period to recognize expense		1 year 4 months 24 days
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserve for issuance or grant (shares)		6.0
Discount allowed to employees on purchase of shares under ESPP plan		5.00%	5.00%	5.00%
1998 and 2001 Plan \| Equity Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)		4 years
1998 and 2001 Plan \| Performance Based Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)		3 years
1998 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserve for issuance or grant (shares)		33.0
2001 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserve for issuance or grant (shares)		50.6
2001 Plan \| Instruments Other Than Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserve for issuance or grant (shares)		14.0
RMS Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserve for issuance or grant (shares)	1.2
Award vesting period (in years)		4 years
Directors' Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserve for issuance or grant (shares)		1.7
Award vesting period (in years)		1 year
Minimum \| Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee subscription rate as a percentage of compensation		1.00%
Minimum \| 1998 and 2001 Plan \| Equity Option \| Employees at or Near Retirement Eligibility
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)		1 year
Maximum \| Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee subscription rate as a percentage of compensation		10.00%
Maximum \| 1998 and 2001 Plan \| Equity Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period		10 years
Maximum \| 1998 and 2001 Plan \| Equity Option \| Employees at or Near Retirement Eligibility
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)		4 years
Maximum \| RMS Plan \| Equity Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period		10 years