XML 49 R38.htm IDEA: XBRL DOCUMENT v3.19.1
Revenues - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Mar. 30, 2019
Mar. 31, 2018
Dec. 31, 2018
Capitalized Contract Cost [Line Items]      
Remaining performance obligation $ 655   $ 489
Remaining performance obligation, expected recognition period 2 years    
Increase driven by payments received or due in advance of satisfying performance obligations $ 400   382
Revenue recognized that was included in contract liability 70 $ 65  
Prepaid expenses and other current assets      
Capitalized Contract Cost [Line Items]      
Contract assets recorded in prepaids and other current assets $ 5   $ 5