Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023
Earnings Per Share [Abstract]
Net income attributed to LP	$ 90	$ 160	$ 108	$ 118	$ (20)	$ 21	$ 358	$ 119
Weighted average common shares outstanding - basic	70			72			71	72
Dilutive effect of employee stock plans (in shares)	0			0			0	0
Shares used for diluted earnings per share (in shares)	71			72			72	72
Net income per share, basic (in dollars per share)	$ 1.28			$ 1.63			$ 5.01	$ 1.65
Net income per share, diluted (in dollars per share)	$ 1.28			$ 1.63			$ 5.00	$ 1.65