Annual report pursuant to Section 13 and 15(d)

Leases - Lease Related Assets and Liabilities (Details)

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Leases - Lease Related Assets and Liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Assets    
Operating lease assets $ 14 $ 14
Finance lease assets 29 33
Total lease assets 43 47
Liabilities    
Operating lease liabilities, current $ 4 $ 4
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Accrued Liabilities, Current Accrued Liabilities, Current
Finance lease liabilities, current $ 5 $ 5
Operating lease liabilities, noncurrent 10 11
Finance lease liabilities, noncurrent 45 50
Total lease liabilities $ 64 $ 70
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Other non-current assets Other non-current assets
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Property and equipment, net Property and equipment, net