Pension, Postretirement and Other Benefits (Tables)
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12 Months Ended |
Sep. 30, 2015 |
| Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract] |
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| Schedule of Changes in Projected Benefit Obligations [Table Text Block] |
Change in Benefit Obligation: | | | | | | | | | | | | | | | | | | Pension Benefits | | Other Postretirement Benefits | | September 30, | | September 30, | | 2015 | | 2014 | | 2015 | | 2014 | | (in millions) | Benefit obligation—beginning of fiscal year | $ | 983 |
| | $ | 897 |
| | $ | 20 |
| | $ | 25 |
| Service cost | 47 |
| | 46 |
| | — |
| | — |
| Interest cost | 40 |
| | 42 |
| | 1 |
| | 1 |
| Actuarial loss (gain) | 40 |
| | 84 |
| | — |
| | (2 | ) | Benefit payments | (105 | ) | | (83 | ) | | (3 | ) | | (4 | ) | Plan amendment | — |
| | (3 | ) | | — |
| | — |
| Benefit obligation—end of fiscal year | $ | 1,005 |
| | $ | 983 |
| | $ | 18 |
| | $ | 20 |
| Accumulated benefit obligation | $ | 994 |
| | $ | 977 |
| | NA |
| | NA |
| Change in Plan Assets: | | | | | | | | Fair value of plan assets—beginning of fiscal year | $ | 1,117 |
| | $ | 1,055 |
| | $ | — |
| | $ | — |
| Actual return on plan assets | (6 | ) | | 135 |
| | — |
| | — |
| Company contribution | 16 |
| | 10 |
| | 3 |
| | 4 |
| Benefit payments | (105 | ) | | (83 | ) | | (3 | ) | | (4 | ) | Fair value of plan assets—end of fiscal year | $ | 1,022 |
| | $ | 1,117 |
| | $ | — |
| | $ | — |
| Funded status at end of fiscal year | $ | 17 |
| | $ | 134 |
| | $ | (18 | ) | | $ | (20 | ) | Recognized in Consolidated Balance Sheets: | | | | | | | | Non-current asset | $ | 36 |
| | $ | 164 |
| | $ | — |
| | $ | — |
| Current liability | (9 | ) | | (7 | ) | | (3 | ) | | (3 | ) | Non-current liability | (10 | ) | | (23 | ) | | (15 | ) | | (17 | ) | Funded status at end of fiscal year | $ | 17 |
| | $ | 134 |
| | $ | (18 | ) | | $ | (20 | ) | | | | | | | | |
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| Pension and Other Postretirement Benefits, Recognized in Accumulated Comprehensive Income (Loss) Disclosure |
Amounts recognized in accumulated other comprehensive income before tax: | | | | | | | | | | | | | | | | | | Pension Benefits | | Other Postretirement Benefits | September 30, | | September 30, | | 2015 | | 2014 | | 2015 | | 2014 | | (in millions) | Net actuarial loss (gain) | $ | 232 |
| | $ | 121 |
| | $ | (5 | ) | | $ | (7 | ) | Prior service credit | (9 | ) | | (16 | ) | | (5 | ) | | (8 | ) | Total | $ | 223 |
| | $ | 105 |
| | $ | (10 | ) | | $ | (15 | ) |
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| Pension And Other Postretirement Benefits, Expected Amortization Of Accumulated Other Comprehensive Income, Disclosure |
Amounts from accumulated other comprehensive income to be amortized into net periodic benefit cost in fiscal 2016: | | | | | | | | | | Pension Benefits | | Other Postretirement Benefits | | (in millions) | Actuarial loss (gain) | $ | 14 |
| | $ | (1 | ) | Prior service credit | (7 | ) | | (3 | ) | Total | $ | 7 |
| | $ | (4 | ) |
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| Plans With Accumulated And Projected Benefit Obligations In Excess Of The Fair Value Of Plan Assets, Disclosure |
Benefit obligations in excess of plan assets related to the Company's non-qualified plan: | | | | | | | | | | Pension Benefits | September 30, | | 2015 | | 2014 | | (in millions) | Accumulated benefit obligation in excess of plan assets | | | | Accumulated benefit obligation—end of year | $ | (19 | ) | | $ | (30 | ) | Fair value of plan assets—end of year | $ | — |
| | $ | — |
| Projected benefit obligation in excess of plan assets | | | | Benefit obligation—end of year | $ | (19 | ) | | $ | (30 | ) | Fair value of plan assets—end of year | $ | — |
| | $ | — |
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| Schedule of Defined Benefit Plans Disclosures |
Net periodic pension and other postretirement plan cost: | | | | | | | | | | | | | | | | | | | | | | | | | | Pension Benefits | | Other Postretirement Benefits | Fiscal | | 2015 | | 2014 | | 2013 | | 2015 | | 2014 | | 2013 | | (in millions) | Service cost | $ | 47 |
| | $ | 46 |
| | $ | 43 |
| | $ | — |
| | $ | — |
| | $ | — |
| Interest cost | 40 |
| | 42 |
| | 35 |
| | 1 |
| | 1 |
| | 1 |
| Expected return on assets | (72 | ) | | (68 | ) | | (61 | ) | | — |
| | — |
| | — |
| Amortization of: | | | | | | | | | | | | Prior service credit | (7 | ) | | (8 | ) | | (9 | ) | | (3 | ) | | (3 | ) | | (3 | ) | Actuarial loss (gain) | 1 |
| | 1 |
| | 28 |
| | (2 | ) | | (1 | ) | | (1 | ) | Net benefit cost | $ | 9 |
| | $ | 13 |
| | $ | 36 |
| | $ | (4 | ) | | $ | (3 | ) | | $ | (3 | ) | Curtailment gain | — |
| | (3 | ) | | — |
| | — |
| | — |
| | — |
| Settlement loss | 7 |
| | 3 |
| | — |
| | — |
| | — |
| | — |
| Total net periodic benefit cost | $ | 16 |
| | $ | 13 |
| | $ | 36 |
| | $ | (4 | ) | | $ | (3 | ) | | $ | (3 | ) |
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| Pension and Other Postretirement Benefits, Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Loss (Income) Disclosure |
Other changes in plan assets and benefit obligations recognized in other comprehensive income: | | | | | | | | | | | | | | | | | | Pension Benefits | | Other Postretirement Benefits | 2015 | | 2014 | | 2015 | | 2014 | | (in millions) | Current year actuarial loss (gain) | $ | 119 |
| | $ | 18 |
| | $ | — |
| | $ | (2 | ) | Amortization of actuarial (loss) gain | (8 | ) | | (4 | ) | | 2 |
| | 1 |
| Current year prior service credit | — |
| | (3 | ) | | — |
| | — |
| Amortization of prior service credit | 7 |
| | 11 |
| | 3 |
| | 3 |
| Total recognized in other comprehensive income | $ | 118 |
| | $ | 22 |
| | $ | 5 |
| | $ | 2 |
| Total recognized in net periodic benefit cost and other comprehensive income | $ | 134 |
| | $ | 35 |
| | $ | 1 |
| | $ | (1 | ) | | | | | | | | |
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| Pension and Other Postretirement Benefits, Net Periodic Benefit Costs Weighted Average Assumptions Disclosure |
Weighted Average Actuarial Assumptions: | | | | | | | | | | | Fiscal | | 2015 | | 2014 | | 2013 | Discount rate for benefit obligation:(1) | | | | | | Pension | 4.33 | % | | 4.27 | % | | 4.81 | % | Postretirement | 2.43 | % | | 2.59 | % | | 2.76 | % | Discount rate for net periodic benefit cost: | | | | | | Pension | 4.27 | % | | 4.81 | % | | 3.85 | % | Postretirement | 2.59 | % | | 2.76 | % | | 2.21 | % | Expected long-term rate of return on plan assets(2) | 7.00 | % | | 7.00 | % | | 7.00 | % | Rate of increase in compensation levels for: | | | | | | Benefit obligation | 4.00 | % | | 4.00 | % | | 4.50 | % | Net periodic benefit cost | 4.00 | % | | 4.50 | % | | 4.50 | % |
| | (1) | Based on a “bond duration matching” methodology, which reflects the matching of projected plan liability cash flows to an average of high-quality corporate bond yield curves whose duration matches the projected cash flows. |
| | (2) | Primarily based on the targeted allocation, and evaluated for reasonableness by considering such factors as: (i) actual return on plan assets; (ii) historical rates of return on various asset classes in the portfolio; (iii) projections of returns on various asset classes; and (iv) current and prospective capital market conditions and economic forecasts. |
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| Fair Value of Net Pension Plan Assets Disclosure |
The following table sets forth by level, within the fair value hierarchy, the pension plan’s investments at fair value as of September 30, 2015 and 2014, including the impact of unsettled transactions: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fair Value Measurements at September 30, | | | Level 1 | | Level 2 | | Level 3 | | Total | | | 2015 | | 2014 | | 2015 | | 2014 | | 2015 | | 2014 | | 2015 | | 2014 | | | (in millions) | Cash equivalents | $ | 11 |
| | $ | 22 |
| | | | | | | | | | $ | 11 |
| | $ | 22 |
| Corporate debt securities | | | | | $ | 169 |
| | $ | 144 |
| | | | | | 169 |
| | 144 |
| U.S. government-sponsored debt securities(1) | | | | | 66 |
| | 106 |
| | | | | | 66 |
| | 106 |
| U.S. Treasury securities(1) | 74 |
| | 53 |
| | | | | | | | | | 74 |
| | 53 |
| Asset-backed securities | | | | | | | | | $ | 31 |
| | $ | 25 |
| | 31 |
| | 25 |
| Equity securities | 671 |
| | 767 |
| | | | | | | | | | 671 |
| | 767 |
| Total | $ | 756 |
| | $ | 842 |
| | $ | 235 |
| | $ | 250 |
| | $ | 31 |
| | $ | 25 |
| | $ | 1,022 |
| | $ | 1,117 |
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| | (1) | U.S. Treasury securities are Level 1 assets, but were previously presented in aggregate with U.S. government-sponsored debt securities as Level 2. The Company now presents U.S. Treasury securities separately for disclosure purposes. There were no changes to the valuation techniques or related inputs used to measure fair value. Prior period amounts reflect the change in presentation. |
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| Pension and Other Postretirement Benefits, Employer Contributions and Expected Benefit Payments Disclosure |
| | | | | | | | | | Pension Benefits | | Other Postretirement Benefits | Actual employer contributions | (in millions) | 2015 | $ | 16 |
| | $ | 3 |
| 2014 | $ | 10 |
| | $ | 4 |
| Expected employer contributions | | | | 2016 | $ | 9 |
| | $ | 3 |
| Expected benefit payments | | | | 2016 | $ | 146 |
| | $ | 3 |
| 2017 | $ | 92 |
| | $ | 3 |
| 2018 | $ | 94 |
| | $ | 3 |
| 2019 | $ | 93 |
| | $ | 3 |
| 2020 | $ | 93 |
| | $ | 2 |
| 2021-2025 | $ | 462 |
| | $ | 5 |
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