Financial Instruments Notional Amounts (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Successor [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	$ 587
Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Predecessor [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount		$ 422
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Successor [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	10,454
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Predecessor [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount		9,896
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Successor [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	$ 6
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Predecessor [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount		$ 7