Stockholders' Equity (Deficit) - Summary of Changes in Common Stock and Common Stock in Treasury (Detail) - shares		12 Months Ended
	Sep. 26, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Shares
Number of shares, beginning of year (in shares)		231,622,535	231,619,037	230,080,944
Shares issued for vested restricted stock units (in shares)		315,902	164,347	151,280
Canceled shares for tax netting (in shares)		(150,217)	(181,488)	0
Other activity (in shares)		0	0	(25,233)
Number of shares issued, end of year (in shares)		231,958,083	231,622,535	231,619,037
Number of shares held, beginning of year (in shares)		77,109,722	75,964,667	61,485,423
Repurchase of common stock (in shares)		856,437
Number of shares held, end of year (in shares)		77,068,311	77,109,722	75,964,667
Number of common stock outstanding, end of year (in shares)		154,889,772	154,512,813	155,654,370
Common Stock in Treasury
Shares
Repurchase of common stock (in shares)		782,156	1,632,163	14,826,924
Profit sharing contribution paid in stock (in shares)		(823,567)	(487,108)	(538,524)
Shares withheld for taxes (in shares)		0	0	190,844
Shares repurchased not reflected (in shares)			74,281
Omnibus Incentive Plan and 2005 Contingent Stock Plan
Shares
Number of units granted (in shares)		0	0	571,438
Shares granted and issued under the Omnibus Incentive Plan and Directors Stock Plan to Directors (in shares)		42,911	123,824	10,841
Shares withheld for taxes (in shares)		279,509	249,368	94,624
Restricted Stock
Shares
Restricted stock shares forfeited (in shares)		(15,271)	(110,984)	(86,518)
Shares issued as part of acquisition (in shares)	20,000	0	0	20,000
Restricted Stock | Omnibus Incentive Plan and 2005 Contingent Stock Plan
Shares
Shares issued for awards (in shares)		0	1,478	569,960
Restricted stock shares forfeited (in shares)		(15,271)	(105,960)	(91,542)
Shares issued for 2014 Special PSU Awards
Shares
Shares issued for awards (in shares)		0	0	658,783
Shares issued for 2014 Special PSU Awards | Omnibus Incentive Plan and 2005 Contingent Stock Plan
Shares
Number of units granted (in shares)		0	0	658,783
Shares issued for 2015 Three-Year PSU Awards
Shares
Shares issued for awards (in shares)		0	0	129,139
Shares issued for 2015 Three-Year PSU Awards | Omnibus Incentive Plan and 2005 Contingent Stock Plan
Shares
Number of units granted (in shares)		0	0	129,139
Shares issued for 2017 Three-Year PSU Awards
Shares
Shares issued for awards (in shares)		133,752	0	0
Shares issued for 2017 Three-Year PSU Awards | Omnibus Incentive Plan and 2005 Contingent Stock Plan
Shares
Number of units granted (in shares)		133,752	0	0
SLO Awards
Shares
Number of units granted (in shares)		8,471	6,321	109,841
SLO Awards | Omnibus Incentive Plan and 2005 Contingent Stock Plan
Shares
Restricted stock shares forfeited (in shares)		0	(1,580)	(817)