XML 16 R30.htm IDEA: XBRL DOCUMENT v3.20.1
Drilling Fleet (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Changes in construction work in progress, including capital expenditures and other capital additions, such as capitalized interest    
Total capital expenditures $ 107 $ 52
Construction in Progress    
Changes in construction work in progress, including capital expenditures and other capital additions, such as capitalized interest    
Construction work in progress, at beginning of period 753 632
Total capital expenditures 107 52
Changes in accrued capital additions (24) (17)
Property and equipment placed into service (62) (20)
Construction work in progress, at end of period 774 647
New builds    
Changes in construction work in progress, including capital expenditures and other capital additions, such as capitalized interest    
Total capital expenditures 50 14
Other property and equipment    
Changes in construction work in progress, including capital expenditures and other capital additions, such as capitalized interest    
Total capital expenditures $ 57 $ 38