Treasury Stock Acquisition (Detail) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Jun. 30, 2022
Schedule of Treasury Stock [Line Items]
Treasury shares at beginning of period		84,128,995		84,128,995
Treasury Stock Share Other				3,027
Treasury shares at end of period	85,504,123			85,504,123
Treasury shares at beginning of period		$ 1,372,641		$ 1,372,641
Acquisitions pursuant to long-term incentive plan, cost	$ 23,252	$ 13	$ 3,522
Treasury Stock Other				28
Treasury shares at end of period	$ 1,395,906			$ 1,395,906
Long Term Incentive Plan
Schedule of Treasury Stock [Line Items]
Acquisitions pursuant to long-term incentive plan, shares				1,372,101
Acquisitions pursuant to long-term incentive plan, cost				$ 23,237