ENVIRONMENTAL LIABILITIES AND EXPENDITURES (Details) $ in Millions	1 Months Ended						3 Months Ended	6 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	Sep. 30, 2016 party	Jun. 30, 2024 USD ($) site category unit party	Dec. 31, 2023 USD ($)
Environmental remediation reserves
Number of sites | site								158
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								$ 857	$ 889
Remediation balance								988
Environmental reserves, exceeding $ ten million, threshold value								$ 10
Environmental reserves, exceeding $ ten million, threshold value, number of sites | site								16
Environmental reserves, range between zero to $ one million site category, number of sites | site								92
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
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 | category								3
NPL Sites
Environmental remediation reserves
Number of sites | site								32
Remediation balance								$ 442
Third-Party Sites
Environmental remediation reserves
Number of sites | site								63
Remediation balance								$ 209
Currently Operated Sites
Environmental remediation reserves
Number of sites | site								12
Remediation balance								$ 93
Closed or Non-Operated Sites
Environmental remediation reserves
Number of sites | site								51
Remediation balance								$ 244
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