ENVIRONMENTAL LIABILITIES AND EXPENDITURES (Details) $ in Millions	1 Months Ended						3 Months Ended
	Jan. 31, 2024 company	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($) party	Sep. 30, 2021 USD ($) mi	Jun. 30, 2018 USD ($)	Mar. 31, 2016 mi	Mar. 31, 2024 USD ($) site unit party	Sep. 30, 2016 party	Dec. 31, 2023 USD ($)
Environmental remediation reserves
Number of sites | site							159
Current portion of environmental remediation liabilities							$ 131
Environmental loss contingency, statement of financial position							Environmental remediation reserves, non-current, included in deferred credits and other liabilities - other, Accrued liabilities
Environmental remediation reserves, non-current, included in deferred credits and other liabilities - other							$ 870		$ 889
Remediation balance							1,001
Environmental reserves, exceeding $ ten million, threshold value							$ 10
Environmental reserves, exceeding $ ten million, threshold value, number of sites | site							18
Environmental reserves, range between zero to $ one million site category, number of sites | site							93
Percent of reserve to be funded over the next three to four years							45.00%
Period of expending remaining environmental reserves (or more)							10 years
Environmental remediation additional loss range							$ 2,600
Subsidiaries
Environmental remediation reserves
Number of sites | site							159
Low end of range
Environmental remediation reserves
Environmental reserves, range between zero to $ one million site category							$ 0
Period of expending first half of environmental reserves							3 years
High end of range
Environmental remediation reserves
Environmental reserves, range between zero to $ one million site category							$ 1
Period of expending first half of environmental reserves							4 years
Non-National Priorities List Sites
Environmental remediation reserves
Environmental remediation contingency, number of site categories | site							3
NPL Sites
Environmental remediation reserves
Number of sites | site							32
Remediation balance							$ 432
Third-Party Sites
Environmental remediation reserves
Number of sites | site							64
Remediation balance							$ 220
Currently Operated Sites
Environmental remediation reserves
Number of sites | site							12
Remediation balance							$ 96
Closed or Non-Operated Sites
Environmental remediation reserves
Number of sites | site							51
Remediation balance							$ 253
Diamond Alkali Superfund Site
Environmental remediation reserves
Site contingency, number of operating units | unit							4
Diamond Alkali Superfund Site - Operable Unit Two
Environmental remediation reserves
Stretch of lower passaic river requiring remedial actions | mi						8.3
Number of parties notified to pay the cost | party								100
Environmental remediation expense					$ 1,400
Diamond Alkali Superfund Site - Operable Unit Four
Environmental remediation reserves
Stretch of lower passaic river requiring remedial actions | mi				17
Environmental remediation expense				$ 440
Stretch of lower passaic river not covered by remedial actions | mi				9
Financial assurance		$ 93
Alden Leeds | Alden Leeds
Environmental remediation reserves
Environmental remediation expense			$ 150
Financial assurance							$ 93
Number of parties, settled | party			85
Number of companies excluded from settlement | company	3
Number of parties to be released | party							82
Remediation period							10 years