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

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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.

+ References

No definition available.

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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- Definition

The effective interest rate at the end of the reporting period.

+ References

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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.

+ References

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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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Amount of long-term debt classified as other.

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The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

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DEBT (Long-Term Debt) (Details) - USD ($) $ in Millions	12 Months Ended
DEBT (Long-Term Debt) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Total long-term debt	$ 4,770		$ 3,893
Debt issuance costs	(26)		(17)
Less: current portion of long-term debt	804		464
Total long-term debt, net of current portion	3,966		3,429
Secured Receivables Credit Facility (3.39% at December 31, 2018)
Debt Instrument [Line Items]
Total long-term debt	0		$ 160
Interest rate at period end			3.39%
2.70% Senior Notes due April 2019
Debt Instrument [Line Items]
Total long-term debt	$ 0		$ 300
Debt instrument, interest rate	2.70%
Debt instrument, maturity date	Apr. 01, 2019
4.75% Senior Notes due January 2020
Debt Instrument [Line Items]
Total long-term debt	$ 500		507
Debt instrument, interest rate	4.75%
Debt instrument, maturity date	Jan. 30, 2020
2.50% Senior Notes due March 2020
Debt Instrument [Line Items]
Total long-term debt	$ 300		300
Debt instrument, interest rate	2.50%
Debt instrument, maturity date	Mar. 30, 2020
4.70% Senior Notes due April 2021
Debt Instrument [Line Items]
Total long-term debt	$ 554		557
Debt instrument, interest rate	4.70%
Debt instrument, maturity date	Apr. 01, 2021
4.25% Senior Notes due April 2024
Debt Instrument [Line Items]
Total long-term debt	$ 308		299
Debt instrument, interest rate	4.25%
Debt instrument, maturity date	Apr. 01, 2024
3.50% Senior Notes due March 2025
Debt Instrument [Line Items]
Total long-term debt	$ 593		562
Debt instrument, interest rate	3.50%
Debt instrument, maturity date	Mar. 30, 2025
3.45% Senior Notes due June 2026
Debt Instrument [Line Items]
Total long-term debt	$ 490		469
Debt instrument, interest rate	3.45%
Debt instrument, maturity date	Jun. 30, 2026
4.20% Senior Notes due June 2029
Debt Instrument [Line Items]
Total long-term debt	$ 499		0
Debt instrument, interest rate	4.20%	4.20%
Debt instrument, maturity date	Jun. 30, 2029
2.95% Senior Notes due June 2030
Debt Instrument [Line Items]
Total long-term debt	$ 798		0
Debt instrument, interest rate	2.95%
Debt instrument, maturity date	Jun. 30, 2030
6.95% Senior Notes due July 2037
Debt Instrument [Line Items]
Total long-term debt	$ 175		175
Debt instrument, interest rate	6.95%
Debt instrument, maturity date	Jul. 01, 2037
5.75% Senior Notes due January 2040
Debt Instrument [Line Items]
Total long-term debt	$ 245		244
Debt instrument, interest rate	5.75%
Debt instrument, maturity date	Jan. 30, 2040
4.70% Senior Notes due March 2045
Debt Instrument [Line Items]
Total long-term debt	$ 300		300
Debt instrument, interest rate	4.70%
Debt instrument, maturity date	Mar. 30, 2045
Other
Debt Instrument [Line Items]
Other	$ 34
Other
Debt Instrument [Line Items]
Other			$ 37