Condensed Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement [Abstract]
Net sales	$ 1,130	$ 1,168	$ 2,297	$ 2,062
Cost of sales	(611)	(483)	(1,158)	(910)
Gross Profit	518	684	1,139	1,152
Selling, general, and administrative expenses	(67)	(53)	(129)	(97)
Other Operating Charges And Credits, Net	11	3	10	3
Income from operations	462	634	1,019	1,058
Non-operating income (expense):
Interest Expense	(3)	(4)	(6)	(9)
Investment income	2	0	3	1
Other non-operating items	2	(3)	(8)	(11)
Income before income taxes	463	629	1,007	1,040
Provision for income taxes	(116)	(144)	(240)	(239)
Income (Loss) from Equity Method Investments, Net of Dividends or Distributions	1	1	2	2
Income from continuing operations	348	486	769	802
Income from discontinued operations, net of income taxes	37	11	99	14
Net income	385	497	868	817
Net loss attributed to noncontrolling interest	0	0	1	1
Net income attributed to LP	$ 384	$ 498	$ 868	$ 818
Net income attributed to LP per share of common stock:
Income per share continuing operations - basic (in dollars per share)	$ 4.30	$ 4.82	$ 9.25	$ 7.76
Income per share discontinued operations - basic (in dollars per share)	0.46	0.11	1.18	0.14
Net income per share - basic (in dollars per share)	4.76	4.93	10.43	7.90
Income per share continuing operations - diluted (in dollars per share)	4.28	4.79	9.19	7.71
Income per share discontinued operations - diluted (in dollars per share)	0.45	0.11	1.18	0.14
Net income per share - diluted (in dollars per share)	$ 4.73	$ 4.90	$ 10.36	$ 7.85
Average shares of common stock used to compute net income per share:
Basic (in shares)	81	101	83	103
Diluted (in shares)	81	102	84	104