Deferred Compensation - Additional Information (Detail) - USD ($) shares in Millions	3 Months Ended					12 Months Ended
	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Investments And Employee Deferred Compensation Plan [Line Items]
Deferred Equity Participation Plan, distributions to key executives, age						age 62 (or the one-year anniversary of the date of the grant for participants over the age of 61 as of the grant date) or upon or after their actual retirement if later.
Deferred Equity Participation Sub-plans, distributions requisite service description						we annually make awards under sub-plans of the DEPP for certain production staff, which generally provide for vesting and/or distributions no sooner than five years from the date of awards, although certain awards vest and/or distribute after the earlier of fifteen years or the participant reaching age 65.
Deferred Equity Participation Sub-plans, distributions to key executives, age						age 65
Deferred Equity Participation Plan (DEPP) [Member]
Investments And Employee Deferred Compensation Plan [Line Items]
Awards approved by committee, value	$ 17,000,000.0			$ 14,100,000	$ 10,100,000
Charge to compensation expenses related to awards						$ 14,100,000	$ 12,200,000	$ 9,800,000
Unearned deferred compensation, value						$ 67,400,000	$ 60,500,000
Unearned deferred compensation, shares						2.7	2.6
Total intrinsic value of unvested equity based awards						$ 451,000,000.0	$ 327,800,000
Cash and equity awards with aggregate fair value vested and distributed to participants						19,100,000	41,200,000	3,100,000
Deferred Equity Participation Plan Sub Plans [Member]
Investments And Employee Deferred Compensation Plan [Line Items]
Awards approved by committee, value						3,200,000	1,800,000	2,600,000
Charge to compensation expenses related to awards						2,300,000	1,900,000	2,400,000
Distributions from the sub-plans						0	0	500,000
Deferred Cash Participation Plan (DCPP) [Member]
Investments And Employee Deferred Compensation Plan [Line Items]
Awards approved by committee, value	$ 3,000,000.0	$ 1,600,000	$ 7,700,000	$ 2,400,000		7,200,000
Charge to compensation expenses related to awards						9,600,000	6,900,000	5,200,000
Cash and equity awards with aggregate fair value vested and distributed to participants						$ 6,700,000	$ 3,200,000	$ 2,500,000