Long-term Debt, Maturities, Repayments of Principal in Year Six

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Face (par) amount of debt instrument at time of issuance.

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

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Amount of unamortized debt discount (premium) and debt issuance costs.

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Present value of lessee's discounted obligation for lease payments from finance lease.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of long-term debt and capital lease obligation due after one year or beyond the normal operating cycle, if longer.

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Amount of long-term debt and capital leases due within one year or the normal operating cycle, if longer.

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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 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 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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Weighted average interest rate of long-term debt outstanding calculated at point in time.

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The cash inflow associated with security instrument that either represents a creditor or an ownership relationship with the holder of the investment security with a maturity of beyond one year or normal operating cycle, if longer. Includes proceeds from (a) debt, (b) capital lease obligations, (c) mandatory redeemable capital securities, and (d) any combination of (a), (b), or (c).

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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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The cash outflow for a borrowing supported by a written promise to pay an obligation.

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NOTES PAYABLE, LONG-TERM DEBT AND AVAILABLE CREDIT FACILITIES Long-Term Debt (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019	Jun. 30, 2019	Jun. 30, 2018	May 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Finance lease obligations 1	$ 399	$ 399	$ 399
Unamortized debt discount and issuance costs	(337)	(337)	(337)			$ (334)
Long-term debt due within one year 2	(297)	(297)	(297)			(338)
Long-term debt	17,155	17,155	17,155			$ 19,253
Long-term Debt, Maturities, Repayments of Principal, 2019	148	148	148
Long-term Debt, Maturities, Repayments of Principal, 2020	380	380	380
Long-term Debt, Maturities, Repayments of Principal, 2021	3,767	3,767	3,767
Long-term Debt, Maturities, Repayments of Principal, 2022	1,513	1,513	1,513
Long-term Debt, Maturities, Repayments of Principal, 2023	508	508	508
Long-term Debt, Maturities, Repayments of Principal, 2024	1,471	1,471	1,471
Line of Credit Facility, Maximum Borrowing Capacity	9,636	9,636	9,636
Proceeds from issuance of long-term debt			2,010	$ 0
Gain (Loss) on Extinguishment of Debt		(44)	(44)
Sundry Income (Expense), Net [Member]
Debt Instrument [Line Items]
Gain (Loss) on Extinguishment of Debt				(1)
Variable Interest Entity, Primary Beneficiary [Member]
Debt Instrument [Line Items]
Proceeds from issuance of long-term debt			16
Term Loan Facility, Due December 2021 [Member]
Debt Instrument [Line Items]
Repayments of Debt		2,500
Term Loan Facility, Due December 2021 [Member] \| Sundry Income (Expense), Net [Member]
Debt Instrument [Line Items]
Gain (Loss) on Extinguishment of Debt			(2)
Term Loan Facility, Due December 2021 [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	2,000	$ 2,000	2,000
InterNotes redeemed [Member]
Debt Instrument [Line Items]
Repayments of Notes Payable			80	20
Long Term Debt Repayment - Variable Interest Entity [Member]
Debt Instrument [Line Items]
Repayments of Debt			$ 134	75
Senior Unsecured Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount					$ 2,000
Senior Unsecured Notes, 4 Point 80 Percent, Due 2049 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount					$ 750
Debt Instrument, Interest Rate, Stated Percentage					4.80%
Senior Unsecured Notes, 3 Point 625 Percent, Due 2026 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount					$ 750
Debt Instrument, Interest Rate, Stated Percentage					3.625%
Senior Unsecured Notes, 3 Point 15 Percent, Due 2024 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount					$ 500
Debt Instrument, Interest Rate, Stated Percentage					3.15%
Four Point Two Five Percent Notes [Member]
Debt Instrument [Line Items]
Repayments of Notes Payable	$ 1,500
Debt Instrument, Interest Rate, Stated Percentage	4.25%	4.25%	4.25%
Four Point Two Five Percent Notes [Member] \| Sundry Income (Expense), Net [Member]
Debt Instrument [Line Items]
Gain (Loss) on Extinguishment of Debt			$ (42)
Tax-exempt Bonds, varying maturities through 2038 [Member]
Debt Instrument [Line Items]
Repayments of Debt				125
Loans Payable [Member] \| Promissory Notes and Debentures, Final Maturity, Current Year [Member]
Debt Instrument [Line Items]
Long-term Debt, Weighted Average Interest Rate, at Point in Time	9.80%	9.80%	9.80%			9.80%
Long-term Debt, Gross	$ 3	$ 3	$ 3			$ 7
Loans Payable [Member] \| Promissory Notes and Debentures, Final Maturity, Year One [Member]
Debt Instrument [Line Items]
Long-term Debt, Weighted Average Interest Rate, at Point in Time	8.44%	8.44%	8.44%			4.46%
Long-term Debt, Gross	$ 76	$ 76	$ 76			$ 1,547
Loans Payable [Member] \| Promissory Notes and Debentures, Final Maturity, Year Two [Member]
Debt Instrument [Line Items]
Long-term Debt, Weighted Average Interest Rate, at Point in Time	4.71%	4.71%	4.71%			4.71%
Long-term Debt, Gross	$ 1,424	$ 1,424	$ 1,424			$ 1,424
Loans Payable [Member] \| Promissory Notes and Debentures, Final Maturity, Year Three [Member]
Debt Instrument [Line Items]
Long-term Debt, Weighted Average Interest Rate, at Point in Time	3.50%	3.50%	3.50%			3.50%
Long-term Debt, Gross	$ 1,372	$ 1,372	$ 1,372			$ 1,373
Loans Payable [Member] \| Promissory Notes and Debentures, Final Maturity, Year Four [Member]
Debt Instrument [Line Items]
Long-term Debt, Weighted Average Interest Rate, at Point in Time	7.64%	7.64%	7.64%			7.64%
Long-term Debt, Gross	$ 325	$ 325	$ 325			$ 325
Loans Payable [Member] \| Promissory Notes and Debentures, Final Maturity, Year Five [Member]
Debt Instrument [Line Items]
Long-term Debt, Weighted Average Interest Rate, at Point in Time	3.37%	3.37%	3.37%			3.50%
Long-term Debt, Gross	$ 1,396	$ 1,396	$ 1,396			$ 896
Loans Payable [Member] \| Promissory Notes and Debentures, Final Maturity, Year Six and Thereafter [Member]
Debt Instrument [Line Items]
Long-term Debt, Weighted Average Interest Rate, at Point in Time	5.70%	5.70%	5.70%			5.98%
Long-term Debt, Gross	$ 9,480	$ 9,480	$ 9,480			$ 7,963
Loans Payable [Member] \| U.S. Dollar Loans [Member]
Debt Instrument [Line Items]
Long-term Debt, Weighted Average Interest Rate, at Point in Time	3.46%	3.46%	3.46%			3.59%
Long-term Debt, Gross	$ 2,000	$ 2,000	$ 2,000			$ 4,533
Loans Payable [Member] \| Foreign Currency Loans [Member]
Debt Instrument [Line Items]
Long-term Debt, Weighted Average Interest Rate, at Point in Time	3.38%	3.38%	3.38%			3.20%
Long-term Debt, Gross	$ 619	$ 619	$ 619			$ 708
Medium-term Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Weighted Average Interest Rate, at Point in Time	3.34%	3.34%	3.34%			3.26%
Long-term Debt, Gross	$ 695	$ 695	$ 695			$ 778
Finance Leases [Member]
Debt Instrument [Line Items]
Finance lease obligations 1	$ 399	$ 399	$ 399			$ 371
Five Point Seven Percent Notes Due 2018 [Member]
Debt Instrument [Line Items]
Repayments of Notes Payable				$ 333
Debt Instrument, Interest Rate, Stated Percentage				5.70%