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Related Party Transactions - (Narrative) (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Related Party Transactions [Abstract]
Redemption value remeasurement adjustments		$ 11	$ 10	$ 58
Related Party Transaction [Line Items]
Redemption value remeasurement adjustments		$ 11	10	58
Icahn Enterprises L.P.
Related Party Transaction [Line Items]
Net sales	$ 71		144	180
Royalty and other income (expense)	2		5	7
Receivables			47
Payables and accruals			9
Icahn Enterprises L.P. \| Allocation Of Certain Tax Credits
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction			3
PSC Metals, Inc
Related Party Transaction [Line Items]
Royalty and other income (expense)	$ 2		$ 5	$ 7
Tenneco \| Class A
Related Party Transaction [Line Items]
Ownership percentage	5.00%