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Leases - Lease-related Assets and Liabilities recorded on the Balance Sheet (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Assets
Operating lease assets	$ 13	$ 26
Finance lease assets	149	170
Total lease assets	$ 162	$ 196
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Property and equipment, net	Property and equipment, net
Liabilities
Current portion of operating lease liability	$ 8	$ 12
Current portion of finance lease liability	67	77
Noncurrent portion of operating lease liability	10	18
Noncurrent portion of finance lease liability	54	53
Total lease liabilities	$ 139	$ 160
Weighted-average remaining lease term
Weighted-average remaining lease term, operating leases	2 years 4 months 13 days	2 years 9 months 21 days
Weighted-average remaining lease term, finance leases	2 years 10 days	1 year 10 months 9 days
Weighted-average discount rate
Weighted-average discount rate, operating leases (percentage)	5.00%	5.00%
Weighted-average discount rate, finance leases (percentage)	4.97%	3.98%

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