Debt And Financing Arrangements (Narrative) (Details) € in Millions, $ in Millions		3 Months Ended			9 Months Ended
	Jun. 24, 2015 EUR (€)	Sep. 30, 2015 USD ($)	Sep. 30, 2015 EUR (€)	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2015 EUR (€)	Jul. 01, 2015 USD ($)
Debt And Financing Arrangements [Line Items]
Debt Instrument, Issuance Date	Jun. 24, 2015
Debt amount designated as a net investment hedge | €							€ 1,100
Debt Instrument, Repurchased Amount Paid		$ 156			$ 156			$ 961
Debt Instrument, Repurchased Face Amount		141			141			$ 794
Gains (Losses) on Extinguishment of Debt		189		$ 0	189	$ 0
Debt purchase transaction costs		7			7
Net increase in long-term debt					300
Excess of fair value over carrying value of long-term debt		1,000			1,000
Line of Credit [Member]
Debt And Financing Arrangements [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		5,700			5,700
Unused lines of credit		4,800			4,800
Commercial Paper [Member]
Debt And Financing Arrangements [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		4,000			4,000
Used lines of credit		900			900
Accounts Receivable Securitization Facility [Member]
Debt And Financing Arrangements [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		1,600			1,600
Used lines of credit		$ 1,100			$ 1,100
1.75% Notes Euros [Member]
Debt And Financing Arrangements [Line Items]
Debt Instrument, Face Amount | €	€ 600
Debt Instrument, Maturity Date					Jun. 23, 2023
Proceeds from Issuance of Long-term Debt | €			€ 594
Floating Rate Notes Euros [Member]
Debt And Financing Arrangements [Line Items]
Debt Instrument, Face Amount | €	€ 500
Debt Instrument, Interest Rate, Stated Percentage	1.75%
Debt Instrument, Maturity Date					Jun. 24, 2019
Proceeds from Issuance of Long-term Debt | €			€ 499
Redeemed Debt [Member]
Debt And Financing Arrangements [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		5.45%			5.45%		5.45%