Debt Instrument, Percentage of Capital Stock of Foreign Subsidiaries Securing Obligations

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- Definition

Debt Instrument Restrictive Covenants [Abstract]

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- Definition

Debt Instrument, Restrictive Covenants, Maximum Ratio of Debt to Cash Flow

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No definition available.

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- Definition

Debt Instrument, Restrictive Covenants, Minimum Ratio of Operating Cash Flow to Interest Charges

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No definition available.

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- Definition

Debt Instrument, Restrictive Covenants, Sale of Guarantor or Its Subsidiaries, Percentage of Proceeds Used to Repay Debt

+ References

No definition available.

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- Definition

Debt Instrument, Restrictive Covenants, Sale of Guarantor or Its Subsidiaries, Percentage of Proceeds Used to Repay Debt If Debt to Cash Flow is Less than 5

+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
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- Definition

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

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-Name Accounting Standards Codification
-Topic 210
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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

Gross amount of debt extinguished.

+ References

No definition available.

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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.

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- Definition

Amount of cash outflow for cost from early extinguishment and prepayment of debt. Includes, but is not limited to, third-party cost, premium paid, and other fee paid to lender directly for debt extinguishment or debt prepayment. Excludes accrued interest.

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Debt (Recourse Debt Narrative) (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended	9 Months Ended	12 Months Ended
	Mar. 31, 2017	Sep. 30, 2017	Sep. 30, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Mar. 01, 2017
Debt Instrument [Line Items]
Loss on extinguishment of debt				$ 188	$ 68	$ 13
8.0% Senior Notes Due 2020 [Domain]
Debt Instrument [Line Items]
Debt terminated amount	$ 24			228
7.375% Senior Notes Due 2021 [Member] [Member]
Debt Instrument [Line Items]
Debt terminated amount	$ 276			690
5.5% Senior Notes Due 2024 [Member] [Member]
Debt Instrument [Line Items]
Debt terminated amount				671
5.5% Senior Notes Due 2025 [Member] [Member]
Debt Instrument [Line Items]
Debt terminated amount				29
LIBOR 2.00% Senior Notes Due in 2022 [Member]
Debt Instrument [Line Items]
Loss on extinguishment of debt			$ 6
Senior Notes [Member] \| 4.5% Senior Notes Due 2023 [Domain] [Domain]
Debt Instrument [Line Items]
Debt face amount				500
Senior Notes [Member] \| 5.125% Senior Notes Due 2017 [Member]
Debt Instrument [Line Items]
Debt face amount		$ 500	500
Senior Notes [Member] \| 8.0% Senior Notes Due 2020 [Domain]
Debt Instrument [Line Items]
Debt terminated amount			217
Senior Notes [Member] \| Senior Unsecured Note LIBOR plus 3% due 2019
Debt Instrument [Line Items]
Debt terminated amount			240
Senior Notes [Member] \| 4.0% Senior Notes Due 2021 [Domain] [Domain]
Debt Instrument [Line Items]
Debt face amount				$ 500
Senior Notes [Member] \| 5.5% Senior Notes Due 2024 [Member] [Member]
Debt Instrument [Line Items]
Stated interest rate				5.50%
Senior Notes [Member] \| 5.5% Senior Notes Due 2025 [Member] [Member]
Debt Instrument [Line Items]
Stated interest rate				5.50%
Senior Notes [Member] \| LIBOR 2.00% Senior Notes Due in 2022 [Member]
Debt Instrument [Line Items]
Debt terminated amount		517
Debt face amount		$ 525	$ 525
Recourse Debt
Recourse Debt Covenants and Guarantees:
Percentage of capital stock of foreign subsidiaries securing obligations				65.00%
Covenants, sale of guarantor or its subsidiaries percentage of proceeds used to repay debt				60.00%
Covenants, sale of guarantor or its subsidiaries percentage of proceeds used to repay debt if debt to cash flow is less than 5				50.00%
Minimum ratio of operating cash flow to interest charges				1.3
Maximum ratio of debt to cash flow				7.5
Unsecured Debt [Member] \| 4.5% Senior Notes Due 2023 [Domain] [Domain]
Debt Instrument [Line Items]
Stated interest rate				4.50%
Unsecured Debt [Member] \| 5.125% Senior Notes Due 2027 [Member]
Debt Instrument [Line Items]
Stated interest rate							5.125%
Unsecured Debt [Member] \| 8.0% Senior Notes Due 2020 [Domain]
Debt Instrument [Line Items]
Stated interest rate		8.00%	8.00%	8.00%			8.00%
Loss on extinguishment of debt			$ 47
Unsecured Debt [Member] \| Senior Unsecured Note LIBOR plus 3% due 2019
Debt Instrument [Line Items]
Loss on extinguishment of debt			$ 36
Unsecured Debt [Member] \| 7.375% Senior Notes Due 2021 [Member] [Member]
Debt Instrument [Line Items]
Stated interest rate				7.375%			7.375%
Unsecured Debt [Member] \| 4.0% Senior Notes Due 2021 [Domain] [Domain]
Debt Instrument [Line Items]
Stated interest rate				4.00%
Unsecured Debt [Member] \| Recourse Debt \| Senior Secured Term Loan due 2022 [Member]
Debt Instrument [Line Items]
Payment for Debt Extinguishment or Debt Prepayment Cost				$ 150
Loss on extinguishment of debt				1
Unsecured Debt [Member] \| Recourse Debt \| 4.0% Senior Notes Due 2021 [Domain] [Domain]
Debt Instrument [Line Items]
Loss on extinguishment of debt				125
Unsecured Debt [Member] \| Recourse Debt \| 5.5% Senior Notes Due 2024 [Member] [Member]
Debt Instrument [Line Items]
Loss on extinguishment of debt				44
Parent Company [Member]
Debt Instrument [Line Items]
Loss on extinguishment of debt				$ 171	$ 92	$ 14