XML 55 R37.htm IDEA: XBRL DOCUMENT v3.5.0.2
Drilling Fleet (Details) - USD ($)
$ in Millions
 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
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 $ 3,736 $ 2,451
Total capital expenditures 1,072 1,336
Changes in accrued capital additions (90) (57)
Impairment of construction work in progress   (52)
Construction work in progress, at end of period 2,843 3,280
New builds    
Changes in construction work in progress, including capital expenditures and other capital additions, such as capitalized interest    
Total capital expenditures 959 1,054
Property and equipment placed into service (1,672)  
Other equipment and construction projects    
Changes in construction work in progress, including capital expenditures and other capital additions, such as capitalized interest    
Total capital expenditures 113 282
Other property and equipment    
Changes in construction work in progress, including capital expenditures and other capital additions, such as capitalized interest    
Property and equipment placed into service $ (203) $ (398)