v2.4.0.6
Financial Instruments - Derivative Financial Instruments and Hedging Activities (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Financial Instruments Gains/(Losses) Reclassified from OCI into OID $ (239) [1],[2] $ (702) [1],[2]
Cash Flow Hedging [Member] | Foreign Exchange Contract [Member]
    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Financial Instruments Gains/(Losses) Reclassified from OCI into OID (243) [1],[2] (704) [1],[2]
All other, net [Member]
    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Financial Instruments Gains/(Losses) Reclassified from OCI into OID 4 [1],[2] 2 [1],[2]
Other Comprehensive Income (Loss) [Member]
    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Financial Instruments Gains/(Losses) Recognized in OCI (660) [1],[2] (1,489) [1],[2]
Other Comprehensive Income (Loss) [Member] | Net Investment Hedging [Member] | Foreign Exchange Contract [Member]
    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Financial Instruments Gains/(Losses) Recognized in OCI (1,059) [1],[2] (97) [1],[2]
Other Comprehensive Income (Loss) [Member] | Net Investment Hedging [Member] | Foreign currency short-term borrowings [Member]
    
Derivative Instruments, Gain (Loss) [Line Items]    
Non - Derivative Financial Instruments Gains/(Losses) Recognized in OCI 940 [1],[2] (241) [1],[2]
Other Comprehensive Income (Loss) [Member] | Net Investment Hedging [Member] | Foreign currency long-term debt [Member]
    
Derivative Instruments, Gain (Loss) [Line Items]    
Non - Derivative Financial Instruments Gains/(Losses) Recognized in OCI (41) [1],[2] (91) [1],[2]
Other Comprehensive Income (Loss) [Member] | Cash Flow Hedging [Member] | Foreign Exchange Contract [Member]
    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Financial Instruments Gains/(Losses) Recognized in OCI (496) [1],[2] (1,054) [1],[2]
Other Comprehensive Income (Loss) [Member] | All other, net [Member]
    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Financial Instruments Gains/(Losses) Recognized in OCI (4) [1],[2] (6) [1],[2]
Other Income Expense [Member]
    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Financial Instruments Gains/(Losses) Recognized in OID (132) [1],[3],[4] (434) [1],[3],[4]
Other Income Expense [Member] | Net Investment Hedging [Member] | Foreign Exchange Contract [Member]
    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Financial Instruments Gains/(Losses) Recognized in OID 7 [1],[3],[4] (1) [1],[3],[4]
Other Income Expense [Member] | Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Financial Instruments Gains/(Losses) Recognized in OID 106 [1],[3],[4] 20 [1],[3],[4]
Other Income Expense [Member] | Not Designated as Hedging Instrument [Member] | Foreign currency forward-exchange contracts [Member]
    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Financial Instruments Gains/(Losses) Recognized in OID (260) [1],[3],[4] (454) [1],[3],[4]
Other Income Expense [Member] | All other, net [Member]
    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Financial Instruments Gains/(Losses) Recognized in OID $ 15 [1],[3],[4] $ 1 [1],[3],[4]
[1] OID = Other (income)/deductions--net, included in the income statement account, Other deductions-net. OCI = Other comprehensive income/(loss), included in the balance sheet account Accumulated other comprehensive loss.
[2] Amounts presented represent the effective portion of the gain or loss. For derivative financial instruments in cash flow hedge relationships, the effective portion is included in Other comprehensive income/(loss)-derivative financial instruments. For derivative financial instruments in net investment hedge relationships and for foreign currency debt designated as hedging instruments, the effective portion is included in Other comprehensive income/(loss)--currency translation adjustment and other.
[3] Also includes gains and losses attributable to the hedged risk in fair value hedged relationships.
[4] There was no significant ineffectiveness for any of the periods presented.