Fair Value Measurements (Aggregate Fair Value of Derivative Financial Instruments and Debt) (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014
Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member]
Assets:
Foreign exchange contracts	$ 0
Total assets	0
Liabilities:
Debt	28,464
Foreign exchange contracts	0
Contingent consideration	0
Total liabilities	28,464
Significant Other Observable Inputs (Level 2) [Member]
Assets:
Foreign exchange contracts	255
Total assets	255
Liabilities:
Debt	181
Foreign exchange contracts	126
Contingent consideration	0
Total liabilities	307
Significant Unobservable Inputs (Level 3) [Member]
Assets:
Foreign exchange contracts	0
Total assets	0
Liabilities:
Debt	0
Foreign exchange contracts	0
Contingent consideration	23
Total liabilities	23
Fair Value [Member]
Assets:
Foreign exchange contracts	255
Total assets	255
Liabilities:
Debt	28,645
Foreign exchange contracts	126
Contingent consideration	23
Total liabilities	$ 28,794