Pensions and Other Postretirement Benefits (Additional Information) (Details)
$ in Millions |
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2 Months Ended |
3 Months Ended |
9 Months Ended |
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Aug. 04, 2016
USD ($)
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Aug. 03, 2016
purchase_agreement
retiree
insurance_company
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Sep. 30, 2016
USD ($)
plan
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Sep. 30, 2016
USD ($)
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Sep. 30, 2015
USD ($)
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Jun. 30, 2017
USD ($)
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Sep. 30, 2016
USD ($)
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Sep. 30, 2015
USD ($)
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Jul. 31, 2016 |
Dec. 31, 2015 |
| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
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| Expected future employer contributions, excluding settlment losses |
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$ 120
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$ 120
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$ 120
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| Pension settlement charges, pre tax |
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968
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$ 0
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968
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$ 0
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| U.S. Defined Benefit Pension Plan [Member] |
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| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
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| Contributions to defined benefit pension plans |
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50
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0
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50
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250
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| Number of Definitive Purchase Agreements | purchase_agreement |
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2
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| Number of insurance companies to service future benefit obligations | insurance_company |
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2
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| Number of Company's retirees affected by annuity purchase | retiree |
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13,200
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| Increase (decrease) in benefit obligation due to settlements |
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(1,600)
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(1,600)
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(1,600)
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| Increase (decrease) in benefit obligation due to U.S. Plan Merger and Remeasurement |
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306
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306
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306
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| Pension settlement charges, after tax |
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535
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| Pension settlement charges, pre tax |
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857
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| Discount rate used to calculate benefit obligation |
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3.60%
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4.50%
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| Increase (decrease) in pension expense |
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10
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10
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10
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| U.S. Defined Benefit Pension Plan [Member] | Flat Glass [Member] |
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| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
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| Contributions to defined benefit pension plans |
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16
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| U.S. Defined Benefit Pension Plan [Member] | Scenario, Forecast [Member] |
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| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
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| Contributions to defined benefit pension plans |
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$ 125
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| Non-U.S Defined Benefit Pension Plan [Member] |
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| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
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| Contributions to defined benefit pension plans |
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$ 1
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7
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| Number of legacy plan windups | plan |
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2
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| After-tax wind-up charges |
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$ (34)
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| Pre-tax gain (loss) due to settlements |
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(47)
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(7)
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| Increase (decrease) in benefit obligation due to U.S. Plan Merger and Remeasurement |
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(200)
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(200)
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(200)
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| Pension settlement charges, after tax |
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47
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| Pension settlement charges, pre tax |
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64
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| Non-U.S Defined Benefit Pension Plan [Member] | Minimum [Member] |
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| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
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| Expected employer mandatory contributions |
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5
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| Non-U.S Defined Benefit Pension Plan [Member] | Maximum [Member] |
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| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
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| Expected employer mandatory contributions |
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15
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| Non-U.S Defined Benefit Pension Plan [Member] | Voluntary Contribution [Member] |
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| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
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| Contributions to defined benefit pension plans |
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0
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0
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0
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21
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| Non-U.S Defined Benefit Pension Plan [Member] | Mandatory Contribution [Member] |
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| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
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| Contributions to defined benefit pension plans |
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15
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0
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28
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15
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| Pension Plan [Member] |
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| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
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| Expected future employer contributions, excluding settlment losses |
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90
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90
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90
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| Pension settlement charges, pre tax |
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968
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$ 7
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968
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$ 7
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| Other Postretirement Benefit Plan [Member] |
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| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
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| Expected future employer contributions, excluding settlment losses |
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$ 30
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$ 30
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$ 30
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| U.S. Postretirement Medical [Member] |
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| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
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| Increase (decrease) in benefit obligation due to U.S. Plan Merger and Remeasurement |
$ (190)
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| Increase (decrease) in pension expense |
(25)
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| Increase (decrease) in amortization |
$ (54)
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| Amortization reduction period |
5 years 7 months
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