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

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- Definition

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

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

Amount, after accumulated amortization, of debt discount.

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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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DEBT AND FINANCING COSTS - Schedule of Debt (Detail) - USD ($)	Dec. 31, 2018	Sep. 15, 2018	Aug. 31, 2018	Feb. 01, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Debt before unamortized discount and debt issuance costs	$ 8,299,000,000
Total debt	8,204,000,000				$ 8,484,000,000
Long-term debt	8,054,000,000				7,934,000,000
Commercial paper
Debt Instrument [Line Items]
Total debt	0				0
Unsecured Debt
Debt Instrument [Line Items]
Debt before unamortized discount and debt issuance costs	8,299,000,000				8,580,000,000
Unamortized discount	(44,000,000)				(47,000,000)
Debt issuance costs	(51,000,000)				(49,000,000)
Total debt	8,204,000,000				8,484,000,000
Current maturities	(150,000,000)				(550,000,000)
Long-term debt	8,054,000,000				7,934,000,000
Unsecured Debt \| 6.9% notes due 2018
Debt Instrument [Line Items]
Debt before unamortized discount and debt issuance costs	0	$ 400,000,000			$ 400,000,000
Debt interest rate		6.90%			6.90%
Unsecured Debt \| 7.0% notes due 2018
Debt Instrument [Line Items]
Debt before unamortized discount and debt issuance costs	0			$ 150,000,000	$ 150,000,000
Debt interest rate				7.00%	7.00%
Unsecured Debt \| 7.625% notes due 2019
Debt Instrument [Line Items]
Debt before unamortized discount and debt issuance costs	$ 150,000,000				$ 150,000,000
Debt interest rate	7.625%
Unsecured Debt \| 3.625% notes due 2021
Debt Instrument [Line Items]
Debt before unamortized discount and debt issuance costs	$ 393,000,000				493,000,000
Debt interest rate	3.625%
Unsecured Debt \| 3.25% notes due 2022
Debt Instrument [Line Items]
Debt before unamortized discount and debt issuance costs	$ 687,000,000				814,000,000
Debt interest rate	3.25%
Unsecured Debt \| 2.625% notes due 2023
Debt Instrument [Line Items]
Debt before unamortized discount and debt issuance costs	$ 403,000,000				528,000,000
Debt interest rate	2.625%
Unsecured Debt \| 7.7% notes due 2026
Debt Instrument [Line Items]
Debt before unamortized discount and debt issuance costs	$ 79,000,000				100,000,000
Debt interest rate	7.70%
Unsecured Debt \| 7.95% notes due 2026
Debt Instrument [Line Items]
Debt before unamortized discount and debt issuance costs	$ 133,000,000				180,000,000
Debt interest rate	7.95%
Unsecured Debt \| 4.375% notes due 2028
Debt Instrument [Line Items]
Debt before unamortized discount and debt issuance costs	$ 1,000,000,000				0
Debt interest rate	4.375%		4.375%
Unsecured Debt \| 7.75% notes due in 2029
Debt Instrument [Line Items]
Debt before unamortized discount and debt issuance costs	$ 300,000,000				300,000,000
Debt interest rate	7.75%
Unsecured Debt \| 6.0% notes due 2037
Debt Instrument [Line Items]
Debt before unamortized discount and debt issuance costs	$ 800,000,000				1,000,000,000
Debt interest rate	6.00%
Unsecured Debt \| 5.1% notes due 2040
Debt Instrument [Line Items]
Debt before unamortized discount and debt issuance costs	$ 1,499,000,000				1,499,000,000
Debt interest rate	5.10%
Unsecured Debt \| 5.25% notes due 2042
Debt Instrument [Line Items]
Debt before unamortized discount and debt issuance costs	$ 500,000,000				500,000,000
Debt interest rate	5.25%
Unsecured Debt \| 4.75% notes due 2043
Debt Instrument [Line Items]
Debt before unamortized discount and debt issuance costs	$ 1,413,000,000				1,413,000,000
Debt interest rate	4.75%
Unsecured Debt \| 4.25% notes due 2044
Debt Instrument [Line Items]
Debt before unamortized discount and debt issuance costs	$ 753,000,000				753,000,000
Debt interest rate	4.25%
Unsecured Debt \| 7.375% debentures due 2047
Debt Instrument [Line Items]
Debt before unamortized discount and debt issuance costs	$ 150,000,000				150,000,000
Debt interest rate	7.375%
Unsecured Debt \| 7.625% debentures due 2096
Debt Instrument [Line Items]
Debt before unamortized discount and debt issuance costs	$ 39,000,000				150,000,000
Debt interest rate	7.625%
Unsecured Debt \| Commercial paper
Debt Instrument [Line Items]
Debt before unamortized discount and debt issuance costs	$ 0				$ 0