Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash provided by operating activities
Net income	$ 324	$ 363	$ 225
Adjustments to reconcile net income to operating cash flows:
Depreciation and amortization	109	99	91
Deferred income taxes	22	67	1
Unrealized (gains) losses on commodity derivatives			(9)
Stock compensation expense	4	5
Change in assets and liabilities:
Accounts receivable, net	(24)	(279)	2
Other receivables	(3)	(2)	6
Related party receivables	(2)	5	(27)
Inventories	(165)		2
Accounts payable	71	54	(6)
Related party payables	(3)	(28)	(89)
Related party accrued interest payable		(18)	133
Income taxes payable	(7)	7	72
Accrued and other current liabilities	(15)	38	9
Other assets and liabilities	(1)	8	(7)
Net cash provided by operating activities	310	319	403
Cash used in investing activities
Acquisition of property, plant and equipment	(141)	(143)	(109)
Advances to related parties			(170)
Repayments from related parties			151
Net cash used in investing activities	(141)	(143)	(128)
Cash (used in) provided by financing activities
Repayment of long-term debt	(125)	(218)	(21)
Dividends paid	(192)	(124)
Proceeds from long-term debt, net of discounts		2,472
Repayments of PEI Group Credit Agreement		(8)
Advances from related parties		240	67
Repayments to related parties		(3,627)	(141)
Deferred debt transaction costs		(28)	(4)
Proceeds from IPO settlement facility		1,168
Repayment of IPO settlement facility		(1,168)
Issuance of common stock		1,410
Equity issuance costs		(69)
Net transfers from (to) Parent		(14)	(97)
Net cash (used in) provided by financing activities	(317)	34	(196)
Cash and cash equivalents:
(Decrease) increase in cash and cash equivalents	(148)	210	79
Balance as of beginning of the year	312	102	23
Balance as of end of the year	164	312	102
Cash paid:
Interest - long-term debt	41	60	103
Interest - related party borrowings		23	6
Income taxes	$ 91	$ 76	$ 4