Revenue Contract Balances (Details) - USD ($)	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Financing Receivable, after Allowance for Credit Loss	$ 118,000,000		$ 303,000,000
Financing Receivable, Allowance for Credit Loss	0		0
Contract with Customer, Liability	379,000,000		337,000,000
Financing Receivable, after Allowance for Credit Loss, Noncurrent	990,000,000	$ 1,051,000,000
Other current assets	1,472,000,000		1,533,000,000
Revenue, Remaining Performance Obligation, Amount	6,000,000
Contract with Customer, Liability	379,000,000		337,000,000
Contract with Customer, Liability, Revenue Recognized	30,000,000	$ 34,000,000
Mong Duong Subsidiary [Member]
Financing Receivable, after Allowance for Credit Loss	1,100,000,000		1,100,000,000
Financing Receivable, Allowance for Credit Loss	26,000,000		28,000,000
Mong Duong Subsidiary [Member] | Discontinued Operations, Held-for-sale or Disposed of by Sale [Member]
Financing Receivable, after Allowance for Credit Loss, Noncurrent	990,000,000		1,000,000,000
Other current assets	105,000,000		$ 97,000,000
Warrior Run
Other current assets	40,000,000
Interest Income, Other	57,000,000
Revenue, Remaining Performance Obligation, Amount	357,000,000
Revenue, Remaining Performance Obligation, Monthly Amount	32,000,000
Contract with Customer, Asset, before Allowance for Credit Loss, Noncurrent	77,000,000
Other Receivable, before Allowance for Credit Loss, Noncurrent	$ 37,000,000