Reportable Segments - Schedule of Reconciliation of Total Assets of Reportable Segments (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Assets	$ 27,735	$ 28,500	$ 29,499
Current assets	7,992	7,212
Property, plant and equipment, net	13,359	14,630
Other non-current assets	2,139	2,220
Operating Segments | Reportable Segments
Segment Reporting Information [Line Items]
Assets	15,151	16,271	16,741
Operating Segments | Hemlock and Emerging Growth Businesses
Segment Reporting Information [Line Items]
Assets	2,475	2,307	2,136
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment
Segment Reporting Information [Line Items]
Current assets	2,881	2,522	2,823
Investments	104	119	99
Property, plant and equipment, net	1,133	1,038	1,385
Other non-current assets	$ 5,991	$ 6,243	$ 6,315