Increase in percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

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- Definition

Debt Instrument, Incremental Decrease in Basis Spread on Variable Rate Resulting from Upgrades

+ References

No definition available.

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- Definition

Debt Instrument, Incremental Increase in Basis Spread on Variable Rate Resulting from Downgrades

+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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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.

+ References

No definition available.

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- Definition

Face (par) amount of the original debt instrument that was repurchased.

+ References

No definition available.

+ Details

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 4
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-Section 45
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-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

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- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
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-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585

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- Definition

Carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion. Senior note holders are paid off in full before any payments are made to junior note holders.

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-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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Debt (Senior Notes - Narrative) (Details) - USD ($) $ in Millions	1 Months Ended					3 Months Ended		9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018	Jun. 30, 2016	Feb. 29, 2016	Jan. 31, 2015	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Jul. 31, 2018	Jul. 31, 2016
Debt Instrument [Line Items]
Repayments of long-term debt								$ 43	$ 1,191
Gain on extinguishment of debt						$ 7	$ 0	$ 7	$ (8)
Senior Notes
Debt Instrument [Line Items]
Repayments of long-term debt		$ 900				$ 43
Gain on extinguishment of debt	$ 7
Senior Notes \| LIBOR
Debt Instrument [Line Items]
Incremental increase in basis points resulting from downgrades					0.25%
Incremental decrease in basis points resulting from upgrades					0.25%
Increase in basis spread			1.75%	1.75%
4.05% Senior Notes due January 2020 \| Long-term debt
Debt Instrument [Line Items]
Senior notes					$ 850
Stated interest rate	6.05%				4.05%	6.05%		6.05%		5.30%	5.80%
4.05% Senior Notes due January 2020 \| Senior Notes
Debt Instrument [Line Items]
Stated interest rate	4.05%	4.05%				4.05%		4.05%
4.95% Senior Notes due January 2025 \| Long-term debt
Debt Instrument [Line Items]
Senior notes					$ 1,000
Stated interest rate	6.95%				4.95%	6.95%		6.95%		6.20%	6.70%
4.95% Senior Notes due January 2025 \| Senior Notes
Debt Instrument [Line Items]
Stated interest rate	4.95%	4.95%				4.95%		4.95%
Repurchased amount	$ 31					$ 31		$ 31
7.50% Senior Notes due 2025 \| Senior Notes
Debt Instrument [Line Items]
Stated interest rate	7.50%	7.50%				7.50%		7.50%
Repurchased amount	$ 11					$ 11		$ 11
7.75% Senior Notes due 2026 \| Senior Notes
Debt Instrument [Line Items]
Stated interest rate	7.75%	7.75%				7.75%		7.75%
Repurchased amount	$ 8					$ 8		$ 8