Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Accounts Receivable and Allowance for Doubtful Receivables (Details)

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Summary of Significant Accounting Policies - Accounts Receivable and Allowance for Doubtful Receivables (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Accounts Receivable, Allowance for Credit Loss [Roll Forward]    
Charged to costs and expenses $ 4  
Balance at end of year $ 4  
Number of days in allowance used n the calculation (greater than) 120 days  
Derivative Instruments and Hedging Activities    
Derivative instruments $ 0 $ 0