v3.3.1.900
Commitments and Contingencies (Schedules of Future Minimum Rental Payments) (Details)
$ in Millions
Dec. 31, 2015
USD ($)
Land and Other Operating Leases [Member]  
Operating Leased Assets [Line Items]  
Operating Leases, Future Minimum Payments Due, Next Twelve Months $ 16
Operating Leases, Future Minimum Payments, Due in Two Years 15
Operating Leases, Future Minimum Payments, Due in Three Years 15
Operating Leases, Future Minimum Payments, Due in Four Years 15
Operating Leases, Future Minimum Payments, Due in Five Years 15
Operating Leases, Future Minimum Payments, Due Thereafter 199
Operating Leases, Future Minimum Payments Due 275
KIAC [Member]  
Operating Leased Assets [Line Items]  
Operating Leases, Future Minimum Payments Due, Next Twelve Months 22
Operating Leases, Future Minimum Payments, Due in Two Years 22
Operating Leases, Future Minimum Payments, Due in Three Years 22
Operating Leases, Future Minimum Payments, Due in Four Years 30
Operating Leases, Future Minimum Payments, Due in Five Years 0
Operating Leases, Future Minimum Payments, Due Thereafter 0
Operating Leases, Future Minimum Payments Due 96
Operting Lease Assets Total [Member]  
Operating Leased Assets [Line Items]  
Operating Leases, Future Minimum Payments Due, Next Twelve Months 38
Operating Leases, Future Minimum Payments, Due in Two Years 37
Operating Leases, Future Minimum Payments, Due in Three Years 37
Operating Leases, Future Minimum Payments, Due in Four Years 45
Operating Leases, Future Minimum Payments, Due in Five Years 15
Operating Leases, Future Minimum Payments, Due Thereafter 199
Operating Leases, Future Minimum Payments Due 371
Natural Gas [Member]  
Operating Leased Assets [Line Items]  
Operating Leases, Future Minimum Payments Due, Next Twelve Months 255
Operating Leases, Future Minimum Payments, Due in Two Years 145
Operating Leases, Future Minimum Payments, Due in Three Years 124
Operating Leases, Future Minimum Payments, Due in Four Years 95
Operating Leases, Future Minimum Payments, Due in Five Years 85
Operating Leases, Future Minimum Payments, Due Thereafter 628
Operating Leases, Future Minimum Payments Due $ 1,332