Leases - Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Operating lease right-of-use assets	$ 3	$ 4
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Property, plant and equipment, net	Property, plant and equipment, net
Finance lease assets	$ 14	$ 16
Total lease assets	$ 17	$ 20
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accrued liabilities – third parties	Accrued liabilities – third parties
Finance lease liability	$ 1	$ 1
Operating lease liabilities	4	4
Finance lease liabilities	23	24
Total lease liabilities	28	29
Finance lease, accumulated amortization	$ 9	$ 8