Outstanding and Weighted Average Common Shares - Changes in Outstanding Common Shares (Detail) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Equity [Abstract]
Beginning balance (in shares)	306,200	309,700	307,000
Activity related to restricted stock awards, net (in shares)	400	500	700
Stock options exercised (in shares)	157	900	1,500
PSUs vested (in shares)	400	500	500
Shares repurchased (in shares)	0	5,400	0
Ending balance (in shares)	307,200	306,200	309,700