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Segments and Related Information - Narrative (Details)
$ in Millions
3 Months Ended
Mar. 31, 2020
USD ($)
segment
Mar. 31, 2019
Segment Reporting [Abstract]    
Number of reportable segments | segment 3  
Segment Reporting Information [Line Items]    
Revenue, remaining performance obligation | $ $ 161  
Revenue, remaining performance obligation, percentage of obligations, remaining fiscal year 51.00%  
Revenue, remaining performance obligation, percentage of obligations, remaining in year two 30.00%  
Transferred over Time    
Segment Reporting Information [Line Items]    
Revenue from contract with customer, percentage of revenue 66.00% 66.00%