Long-Term Debt and Credit Facilities (Maturities Of Long-Term Debt Disclosures) (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Other	$ 36	$ 25
Total debt	3,962	2,764
Less current maturities	(731)	(25)
Total long-term debt	3,231	2,739
3.00% senior unsecured notes, due January 15, 2015
Debt Instrument, Interest Rate, Stated Percentage	3.00%
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	500	500
Senior Unsecured Notes 2.00% due 2016 [Member]
Debt Instrument, Interest Rate, Stated Percentage	2.00%
Senior unsecured notes repayable in year three	749	749
1.30% senior unsecured notes, due April 1, 2018
Debt Instrument, Interest Rate, Stated Percentage	1.30%
Senior unsecured notes repayable in year four	598	598
4.375% senior unsecured notes, due January 15, 2020
Debt Instrument, Interest Rate, Stated Percentage	4.375%
Senior unsecured notes repayable after year five	498	498
Senior Unsecured Notes 3.375% due 2024 [Member]
Debt Instrument, Interest Rate, Stated Percentage	3.375%
Senior unsecured notes repayable after year five	589	0
4.10% senior unsecured notes, due April 1, 2043
Debt Instrument, Interest Rate, Stated Percentage	4.10%
Senior unsecured notes repayable after year five	395	394
4.375% senior unsecured notes due 2044 [Member]
Debt Instrument, Interest Rate, Stated Percentage	4.375%
Senior unsecured notes repayable after year five	398	0
Commercial paper
Commercial paper	$ 199	$ 0

Debt, Long-term and Short-term, Other

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Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Represents the aggregate of total long-term debt, including current maturities and short-term debt.

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No definition available.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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