|
Derivatives And Hedging Activities Effect of Derivative Instruments in Consolidated Statement of Operations (Details) (USD $)
In Millions, unless otherwise specified
|
12 Months Ended |
3 Months Ended |
|
Mar. 31, 2017
|
Mar. 31, 2016
|
Mar. 31, 2015
|
Mar. 31, 2014
|
| Scenario, Forecast | Cost of Sales |
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Loss Reclassified from Accumulated OCI into Income (Effective Portion) |
$ (37) |
$ (74) |
|
|
| Not Designated as Hedging Instrument |
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Derivative, Loss on Derivative |
|
|
(1) |
|
| Derivative, Gain on Derivative |
|
|
|
1 |
| Not Designated as Hedging Instrument | Commodity derivatives |
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Derivative, Loss on Derivative |
|
|
0 |
|
| Derivative, Gain on Derivative |
|
|
|
0 |
| Not Designated as Hedging Instrument | Foreign currency derivatives |
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Derivative, Loss on Derivative |
|
|
(1) |
|
| Derivative, Gain on Derivative |
|
|
|
1 |
| Designated as Hedging Instrument |
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Derivative Instruments, Loss Recognized in Other Comprehensive Income (Loss), Effective Portion |
|
|
32 |
41 |
| Loss Reclassified from Accumulated OCI into Income (Effective Portion) |
|
|
(24) |
0 |
| Derivative Instruments, Gain Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing |
|
|
0 |
0 |
| Designated as Hedging Instrument | Commodity derivatives |
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Derivative Instruments, Loss Recognized in Other Comprehensive Income (Loss), Effective Portion |
|
|
14 |
25 |
| Loss Reclassified from Accumulated OCI into Income (Effective Portion) |
|
|
(10) |
(4) |
| Derivative Instruments, Gain Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing |
|
|
0 |
0 |
| Designated as Hedging Instrument | Foreign currency derivatives |
|
|
|
|
| Derivative Instruments, Gain (Loss) [Line Items] |
|
|
|
|
| Derivative Instruments, Loss Recognized in Other Comprehensive Income (Loss), Effective Portion |
|
|
18 |
16 |
| Loss Reclassified from Accumulated OCI into Income (Effective Portion) |
|
|
(14) |
|
| Gain Reclassified from Accumulated OCI into Income, Effective Portion |
|
|
|
4 |
| Derivative Instruments, Gain Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing |
|
|
$ 0 |
$ 0 |