Discontinued Operations and Divestitures (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Mar. 10, 2015 |
Mar. 31, 2016 |
Mar. 31, 2015 |
Mar. 31, 2016 |
Mar. 31, 2015 |
|
| Discontinued Operations | |||||
| Income (loss) from discontinued operations, net of taxes | $ (1) | $ (6) | $ 1 | $ (8) | |
| Sales | 0 | 10 | 0 | 18 | |
| Income (loss) from discontinued operations before income taxes | (1) | (10) | 2 | (13) | |
| Income tax benefit (expense) from discontinued operations | 0 | $ 4 | (1) | $ 5 | |
| ASES [Member] | |||||
| Discontinued Operations | |||||
| Proceeds from divestiture of businesses | $ 3 | ||||
| Disposal Group, Post Closing Consideration that May Be Received | $ 4 | 4 | |||
| Gain (loss) from business divestiture | (5) | ||||
| Loss on sale of business, net of tax | $ 3 | ||||
| Income (loss) from discontinued operations, net of taxes | 1 | ||||
| Income (loss) from discontinued operations before income taxes | $ 2 | ||||