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