Financial Instruments (Details 1) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013	Dec. 31, 2013
Financial Instruments:
Impairments of non-financial assets	$ 0		$ 0
Financial assets and financial liabilities measured at fair value on a recurring basis:
Debt securities - noncurrent	9	[1]		9	[1]
Available-for-sale equity investments	8	[1]		18	[1]
Derivative assets	528			439
Derivative liabilities	158			250
Potential reduction in net position of total derivative liabilities	184			251
Recurring
Financial assets and financial liabilities measured at fair value on a recurring basis:
Cash equivalents	7,474	[2],[3]		7,997	[2],[3]
Debt securities - current	5	[2],[4]		350	[2],[4]
Debt securities - noncurrent	9	[1]		9	[1]
Trading securities investments	92	[1]
Available-for-sale equity investments	8	[1]		18	[1]
Derivative assets	772	[5],[6]		719	[7],[8]
Total Assets	8,362	[6]		9,092	[8]
Total Liabilities	341	[6]		501	[8]
Potential reduction in net position of total derivative assets	184			251
Potential reduction in net position of total derivative liabilities	184			251
Recurring | Prepaid expenses and other current assets
Financial assets and financial liabilities measured at fair value on a recurring basis:
Derivative assets	176			318
Recurring | Investments and sundry assets
Financial assets and financial liabilities measured at fair value on a recurring basis:
Derivative assets	596			401
Recurring | Other accrued expenses and liabilities
Financial assets and financial liabilities measured at fair value on a recurring basis:
Derivative liabilities	309			375
Recurring | Other liabilities
Financial assets and financial liabilities measured at fair value on a recurring basis:
Derivative liabilities	32			126
Recurring | Interest rate contracts
Financial assets and financial liabilities measured at fair value on a recurring basis:
Derivative assets	490	[5]		308	[7]
Derivative liabilities	0	[9]		13	[10]
Recurring | Foreign exchange contracts
Financial assets and financial liabilities measured at fair value on a recurring basis:
Derivative assets	268	[5]		375	[7]
Derivative liabilities	328	[9]		484	[10]
Recurring | Equity contracts
Financial assets and financial liabilities measured at fair value on a recurring basis:
Derivative assets	15	[5]		36	[7]
Derivative liabilities	13	[9]		4	[10]
Recurring | Time deposits and certificates of deposit
Financial assets and financial liabilities measured at fair value on a recurring basis:
Cash equivalents	5,056	[3]		4,754	[3]
Recurring | Commercial paper
Financial assets and financial liabilities measured at fair value on a recurring basis:
Cash equivalents	615	[3]		1,507	[3]
Recurring | Money market funds
Financial assets and financial liabilities measured at fair value on a recurring basis:
Cash equivalents	1,260	[3]		1,728	[3]
Recurring | U.S. government securities
Financial assets and financial liabilities measured at fair value on a recurring basis:
Cash equivalents	300	[3]
Recurring | Canadian government securities
Financial assets and financial liabilities measured at fair value on a recurring basis:
Cash equivalents	234	[3]
Recurring | Other securities
Financial assets and financial liabilities measured at fair value on a recurring basis:
Cash equivalents	8	[3]		8	[3]
Recurring | Level 1
Financial assets and financial liabilities measured at fair value on a recurring basis:
Cash equivalents	1,260	[2],[3]		1,728	[2],[3]
Debt securities - noncurrent	1	[1]		1	[1]
Available-for-sale equity investments	8	[1]		18	[1]
Total Assets	1,270	[6]		1,747	[8]
Recurring | Level 1 | Money market funds
Financial assets and financial liabilities measured at fair value on a recurring basis:
Cash equivalents	1,260	[3]		1,728	[3]
Recurring | Level 2
Financial assets and financial liabilities measured at fair value on a recurring basis:
Cash equivalents	6,213	[2],[3]		6,269	[2],[3]
Debt securities - current	5	[2],[4]		350	[2],[4]
Debt securities - noncurrent	8	[1]		7	[1]
Trading securities investments	92	[1]
Derivative assets	772	[5],[6]		719	[7],[8]
Total Assets	7,091	[6]		7,345	[8]
Total Liabilities	341	[6]		501	[8]
Recurring | Level 2 | Interest rate contracts
Financial assets and financial liabilities measured at fair value on a recurring basis:
Derivative assets	490	[5]		308	[7]
Derivative liabilities	0	[9]		13	[10]
Recurring | Level 2 | Foreign exchange contracts
Financial assets and financial liabilities measured at fair value on a recurring basis:
Derivative assets	268	[5]		375	[7]
Derivative liabilities	328	[9]		484	[10]
Recurring | Level 2 | Equity contracts
Financial assets and financial liabilities measured at fair value on a recurring basis:
Derivative assets	15	[5]		36	[7]
Derivative liabilities	13	[9]		4	[10]
Recurring | Level 2 | Time deposits and certificates of deposit
Financial assets and financial liabilities measured at fair value on a recurring basis:
Cash equivalents	5,056	[3]		4,754	[3]
Recurring | Level 2 | Commercial paper
Financial assets and financial liabilities measured at fair value on a recurring basis:
Cash equivalents	615	[3]		1,507	[3]
Recurring | Level 2 | U.S. government securities
Financial assets and financial liabilities measured at fair value on a recurring basis:
Cash equivalents	300	[3]
Recurring | Level 2 | Canadian government securities
Financial assets and financial liabilities measured at fair value on a recurring basis:
Cash equivalents	234	[3]
Recurring | Level 2 | Other securities
Financial assets and financial liabilities measured at fair value on a recurring basis:
Cash equivalents	$ 8	[3]		$ 8	[3]

[1] Included within investments and sundry assets in the Consolidated Statement of Financial Position.

[2] Available-for-sale securities with carrying values that approximate fair value.

[3] Included within cash and cash equivalents in the Consolidated Statement of Financial Position

[4] Commercial paper and certificates of deposit reported as marketable securities in the Consolidated Statement of Financial Position.

[5] The gross balances of derivative assets contained within prepaid expenses and other current assets, and investments and sundry assets in the Consolidated Statement of Financial Position at June 30, 2014 were $176 million and $596 million respectively.

[6] If derivative exposures covered by a qualifying master netting agreement had been netted in the Consolidated Statement of Financial Position, the total derivative asset and liability positions would have been reduced by $184 million each.

[7] The gross balances of derivative assets contained within prepaid expenses and other current assets, and investments and sundry assets in the Consolidated Statement of Financial Position at December 31, 2013 were $318 million and $401 million, respectively.

[8] If derivative exposures covered by a qualifying master netting agreement had been netted in the Consolidated Statement of Financial Position, the total derivative asset and liability positions would have been reduced by $251 million each.

[9] The gross balances of derivative liabilities contained within other accrued expenses and liabilities, and other Liabilities in the Consolidated Statement of Financial Position at June 30, 2014 were $309 million and $32 million, respectively.

[10] The gross balances of derivative liabilities contained within other accrued expenses and liabilities, and other liabilities in the Consolidated Statement of Financial Position at December 31, 2013 were $375 million and $126 million, respectively.