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Fair Value Disclosures (Tables)
12 Months Ended
Dec. 31, 2021
Fair Value Disclosures [Abstract]  
Estimated Fair Values and Carrying Amounts of Assets and Liabilities
The following table shows the estimated fair values of the Company's financial instruments, along with the carrying amounts of the related assets (liabilities). See also note 2.
 Level in Fair Value HierarchyDecember 31, 2021December 31, 2020
 Carrying
Amount
Fair
Value
Carrying
Amount
Fair
Value
Assets:
Cash and cash equivalents1$292 $292 $232 $232 
Restricted cash, current and non-current1174 174 149 149 
Liabilities:
Total debt and other obligations220,629 21,588 19,280 21,302