Derivatives (Details) - Cash flow hedge € in Millions, $ in Millions	1 Months Ended		3 Months Ended		6 Months Ended
	Nov. 30, 2014 USD ($)	Aug. 31, 2011 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Nov. 30, 2014 EUR (€)
Derivatives in Cash Flow Hedging Relationships
Maximum length of time hedged in cash flow hedge					36 months
Maximum length of time hedged in cash flow hedge prior to current period				12 months	24 months
Pretax Gain (Loss) Recognized in Other Comprehensive Income on Effective portion of Derivative			$ (16)	$ (21)	$ 120	$ (12)
Gain (Loss) on Hedged Item Recognized in Income			34	(5)	61	1
Accumulated other comprehensive income (loss), unrealized gain (loss) on cash flow hedges			137		137
Ineffective portion of gain (loss) on derivative and amount excluded from effectiveness testing recognized in income			0	0	0	0
After-tax net unrealized gain (loss) anticipated to be reclassifed from AOCI to the income statement within next twelve months					103
After-tax net unrealized gain (loss) anticipated to be reclassifed from AOCI to the Income Statement over remaining fiscal year					65
After-tax net unrealized gain (loss) anticipated to be reclassifed from AOCI to the Income Statement over next fiscal year					65
After-tax net unrealized gain (loss) anticipated to be reclassifed from AOCI to the Income Statement after next fiscal year					7
Foreign currency forward/option contracts
Derivatives in Cash Flow Hedging Relationships
Derivative notional amount			2,900		2,900
Pretax Gain (Loss) Recognized in Other Comprehensive Income on Effective portion of Derivative			(16)	(20)	120	(13)
Foreign currency forward/option contracts | Cost of Sales
Derivatives in Cash Flow Hedging Relationships
Gain (Loss) on Hedged Item Recognized in Income			35	(6)	65	(2)
Ineffective portion of gain (loss) on derivative and amount excluded from effectiveness testing recognized in income			0	0	0	0
Commodity price swap contracts
Derivatives in Cash Flow Hedging Relationships
Pretax Gain (Loss) Recognized in Other Comprehensive Income on Effective portion of Derivative				(1)	0	1
Commodity price swap contracts | Cost of Sales
Derivatives in Cash Flow Hedging Relationships
Gain (Loss) on Hedged Item Recognized in Income				1	(2)	3
Ineffective portion of gain (loss) on derivative and amount excluded from effectiveness testing recognized in income				$ 0	0	$ 0
Interest rate swap contracts
Derivatives in Cash Flow Hedging Relationships
Derivative notional amount		$ 400					€ 500
Pretax Gain (Loss) Recognized in Other Comprehensive Income on Effective portion of Derivative	$ (8)	(7)	0		0
Accumulated other comprehensive income (loss), unrealized gain (loss) on cash flow hedges	$ (5)	$ (4)	(6)		(6)
Term of derivative contract	12 years	5 years
Interest rate swap contracts | Fixed rate Medium term note due 2016
Derivatives in Cash Flow Hedging Relationships
Principal amount		$ 1,000
Term of debt instrument		5 years
Interest rate swap contracts | Fixed rate Euro Medium term note due 2026
Derivatives in Cash Flow Hedging Relationships
Principal amount | €							€ 750
Term of debt instrument	12 years
Interest rate swap contracts | Interest expense
Derivatives in Cash Flow Hedging Relationships
Gain (Loss) on Hedged Item Recognized in Income			(1)		(2)
Ineffective portion of gain (loss) on derivative and amount excluded from effectiveness testing recognized in income			$ 0		$ 0