The percentage reduction to the calculated variable rate.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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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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- Definition

The price per share of the conversion feature embedded in the debt instrument.

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- Definition

Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount.

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- Definition

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

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The average effective interest rate during the reporting period.

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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.

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No definition available.

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Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

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Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

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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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- Definition

The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination.

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Amount of cash and cash equivalents restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Debt (Issued) (Details) $ / shares in Units, $ in Millions			1 Months Ended	3 Months Ended
Debt (Issued) (Details) $ / shares in Units, $ in Millions	Jan. 17, 2020 USD ($)	Feb. 01, 2019 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2020 USD ($) $ / shares	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)
Debt
Proceeds from issuance of debt				$ 743	$ 540
Aggregate principal amount outstanding				$ 9,246		$ 9,361
Five-Year Revolving Credit Facility
Debt
Borrowing capacity, maximum			$ 1,000			1,300
Commitment fee percentage at period end				0.625%
Credit facility amount outstanding				$ 0
Letters of credit issued and outstanding				7
Credit facility available borrowing capacity				$ 1,300
Five-Year Revolving Credit Facility \| Minimum
Debt
Commitment fee percentage at period end			0.375%
Five-Year Revolving Credit Facility \| Maximum
Debt
Commitment fee percentage at period end			1.00%
Five-Year Revolving Credit Facility \| Adjusted LIBOR
Debt
Spread on variable rate basis (as a percent)				2.875%
Percentage reduction to the calculated variable rate			1.00%
Five-Year Revolving Credit Facility \| Adjusted LIBOR \| Minimum
Debt
Spread on variable rate basis (as a percent)			2.625%
Five-Year Revolving Credit Facility \| Adjusted LIBOR \| Maximum
Debt
Spread on variable rate basis (as a percent)			3.375%
6.375% Senior Notes due December 2021
Debt
Debt instrument interest rate stated percentage				6.375%
Interest rate, as adjusted (as a percent)				8.375%
Aggregate principal amount outstanding				$ 184		222
3.80% Senior Notes due October 2022
Debt
Debt instrument interest rate stated percentage				3.80%
Interest rate, as adjusted (as a percent)				5.80%
Aggregate principal amount outstanding				$ 187		190
7.35% Senior Notes due December 2041
Debt
Debt instrument interest rate stated percentage				7.35%
Interest rate, as adjusted (as a percent)				9.35%
Aggregate principal amount outstanding				$ 300		300
0.50% Exchangeable Bonds due January 2023
Debt
Debt instrument interest rate stated percentage				0.50%
Aggregate principal amount outstanding				$ 863		863
Debt conversion ratio				0.09729756
Debt conversion (in dollars per share) \| $ / shares				$ 10.28
8.00% Senior Unsecured Notes due February 2027
Debt
Debt instrument interest rate stated percentage	8.00%			8.00%
Debt instrument face value	$ 750
Proceeds from issuance of debt	$ 743
Redemption price of debt instrument (as a percent)	100.00%
Aggregate principal amount outstanding				$ 750
6.875% Senior Secured Notes due February 2027
Debt
Debt instrument interest rate stated percentage		6.875%		6.875%
Debt instrument face value		$ 550
Proceeds from issuance of debt		$ 539
Redemption price of debt instrument (as a percent)		100.00%
Aggregate principal amount outstanding				$ 550		$ 550
Restricted cash and cash equivalents		$ 19