v2.4.0.6
Postretirement Benefit Plans (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Net periodic benefit cost:    
Amortization of net actuarial loss $ 1  
Net periodic benefit cost 7 7
Other changes in plan assets and benefit obligations recognized in other comprehensive income    
Settlement 0 (2)
Change recognized in other comprehensive income (4) (4)
Total recognized in comprehensive income 3 3
Domestic defined benefit pension plans
   
Net periodic benefit cost:    
Service cost 1 1
Interest cost 1 1
Expected return on plan assets (1) (1)
Net periodic benefit cost 2 1
Other changes in plan assets and benefit obligations recognized in other comprehensive income    
Amortization of net actuarial loss (1)  
Change recognized in other comprehensive income (1)  
International defined benefit pension plans
   
Net periodic benefit cost:    
Service cost 3 3
Interest cost 7 7
Expected return on plan assets (8) (8)
Amortization of net actuarial loss 3 2
Settlement 0 2
Net periodic benefit cost 5 6
Other changes in plan assets and benefit obligations recognized in other comprehensive income    
Amortization of net actuarial loss (3) (2)
Settlement 0 (2)
Change recognized in other comprehensive income $ (3) $ (4)