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Summary of Significant Accounting Policies - Narrative (Details)
$ in Millions
3 Months Ended 12 Months Ended
Apr. 01, 2020
company
Jun. 30, 2019
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
segment
Dec. 31, 2019
Summary Of Significant Accounting Policies [Line Items]          
Number of independent, publicly-traded companies resulting from proposed separation transaction | company 2        
Number of reportable segments | segment       4  
Minimum percentage of estimated fair value of reporting unit to be less than carrying amount of goodwill     50.00%    
Period required for impairment testing of reporting units     3 years    
Impairment of goodwill   $ 0 $ 4 $ 2  
Advance payment     $ 85 $ 46  
Businesses expected to be disposed within, years     1 year    
Aerospace | Revenue Benchmark | Customer Concentration Risk          
Summary Of Significant Accounting Policies [Line Items]          
Concentration risk, percentage     60.00% 69.00% 71.00%