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Stockholders' Equity - Common Share Repurchases, Issuances and Dividends Paid (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Equity, Class of Treasury Stock [Line Items]
Average purchase price per share	$ 12.56	$ 15.41	$ 13.22	$ 16.14
Remaining common stock repurchase authority	$ 52	$ 209	$ 52	$ 209
Shares repurchased related to employee stock-based compensation plans	0	0	400,000	500,000
Average purchase price per share	$ 0	$ 0	$ 13.74	$ 16.04
Common shares issued	0	100,000	1,300,000	1,400,000
Dividends paid	$ 16	$ 17	$ 32	$ 35
Dividends per share	$ 0.16	$ 0.16	$ 0.32	$ 0.32
Common Stock Shares Outstanding [Member]
Equity, Class of Treasury Stock [Line Items]
Common stock repurchased, shares	1,900,000	2,500,000	4,500,000	5,000,000
Common stock repurchased, value	$ 24	$ 38	$ 59	$ 81
Shares repurchased related to employee stock-based compensation plans	7,543	25,421	418,655	469,391
Common shares issued	14,995	76,826	1,287,528	1,393,083

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