XML 58 R40.htm IDEA: XBRL DOCUMENT v3.5.0.2
Postemployment Benefit Plans (Costs) (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Transocean Plans        
Net periodic benefit costs, before tax        
Service cost $ 3 $ 9 $ 13 $ 25
Interest cost 21 22 64 65
Expected return on plan assets (26) (29) (78) (86)
Settlements and curtailments (3) 4 (5) 4
Actuarial losses, net 1 5 5 15
Prior service cost, net (2) (1) (4) (1)
Net transition obligation       1
Net periodic benefit costs (6) 10 (5) 23
Funding contributions 2 14 45 30
U.S. Plans        
Net periodic benefit costs, before tax        
Service cost   1 2 4
Interest cost 18 17 52 49
Expected return on plan assets (20) (22) (60) (65)
Settlements and curtailments   2 1 2
Actuarial losses, net 1 3 3 8
Net periodic benefit costs (1) 1 (2) (2)
Funding contributions 1 9 3 10
Non-U.S. Plans        
Net periodic benefit costs, before tax        
Service cost 3 7 11 20
Interest cost 4 4 12 14
Expected return on plan assets (6) (7) (18) (21)
Settlements and curtailments (5) 1 (6) 1
Actuarial losses, net   2 2 7
Net transition obligation       1
Net periodic benefit costs (4) 7 1 22
Funding contributions 1 2 41 14
OPEB Plans        
Net periodic benefit costs, before tax        
Service cost   1   1
Interest cost   1   2
Interest benefit (1)      
Settlements and curtailments 2 1   1
Prior service cost, net (2) (1) (4) (1)
Net periodic benefit costs $ (1) 2 (4) 3
Funding contributions   $ 3 $ 1 $ 6