Condensed Consolidated Statement of Comprehensive Income - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Mar. 31, 2016 |
Mar. 31, 2015 |
Mar. 31, 2016 |
Mar. 31, 2015 |
|
| Statement of Comprehensive Income [Abstract] | ||||
| Net income | $ 171 | $ 157 | $ 306 | $ 324 |
| Unrealized foreign currency translation adjustments | 8 | (22) | 0 | (36) |
| Pension and other retirement benefits adjustments (net of taxes for the three and six months ended March 31, 2016 of $8 and $16, respectively; net of taxes for the three and six months ended March 31, 2015 of $6 and $13, respectively) | 13 | 12 | 26 | 23 |
| Foreign currency cash flow hedge adjustments (net of taxes for the three and six months ended March 31, 2016 of $1 and $1, respectively; net of taxes for the three and six months ended March 31, 2015 of $1 and $(1), respectively) | 2 | 1 | 3 | (3) |
| Comprehensive income | $ 194 | $ 148 | $ 335 | $ 308 |