Debt Instrument, Redemption Price, Percentage, Change Of Control Event

No definition available.

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- Definition

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

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Period Type:	instant

- 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.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

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

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- Definition

Nominal or face amount used to calculate payments on the derivative liability.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Balance Type:	na
Period Type:	instant

- Definition

Amount of the cost of borrowed funds accounted for as interest expense for debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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Balance Type:	credit
Period Type:	duration

- Definition

The cash outflow for a long-term debt where the holder has highest claim on the entity's asset in case of bankruptcy or liquidation during the period.

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Debt - Senior Notes (Details) - USD ($)	12 Months Ended
Debt - Senior Notes (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Sep. 30, 2019	Jul. 31, 2019	Jul. 31, 2014
Debt Instrument [Line Items]
Repayments of debt	$ 1,550,000,000	$ 750,000,000	$ 1,452,000,000
Fair Value Hedging \| Interest Rate Swap \| Designated as Hedging Instrument
Debt Instrument [Line Items]
Derivative liability	$ 2,400,000,000				$ 2,400,000,000	$ 2,400,000,000
Senior Notes
Debt Instrument [Line Items]
Redemption percentage in event of change in control	101.00%
Interest expense	$ 301,000,000	318,000,000	$ 307,000,000
Fair value of long-term debt	7,900,000,000	$ 9,000,000,000.0
Senior Notes \| Senior notes due 2019
Debt Instrument [Line Items]
Repayments of debt	400,000,000
Senior Notes \| Senior notes due 2019
Debt Instrument [Line Items]
Repayments of debt	$ 1,150,000,000
Coupon rate, fixed rate notes	2.20%				2.20%
Senior Notes \| Senior notes due 2018
Debt Instrument [Line Items]
Coupon rate, fixed rate notes		2.50%
Repayments of debt		$ 750,000,000
Senior Notes \| Senior notes due 2056
Debt Instrument [Line Items]
Coupon rate, fixed rate notes	6.00%
Redemption price percentage	100.00%
Senior Notes \| Senior notes due 2020
Debt Instrument [Line Items]
Coupon rate, fixed rate notes	2.15%
Senior Notes \| Senior notes due 2022
Debt Instrument [Line Items]
Coupon rate, fixed rate notes	3.80%
Senior Notes \| Senior notes due 2023
Debt Instrument [Line Items]
Coupon rate, fixed rate notes	2.75%
Senior Notes \| Senior notes due 2027
Debt Instrument [Line Items]
Coupon rate, fixed rate notes	3.60%
Senior Notes \| Senior notes due 2021
Debt Instrument [Line Items]
Coupon rate, fixed rate notes	2.875%			2.875%	2.875%
Face amount				$ 750,000,000	$ 750,000,000
Senior Notes \| Senior notes due 2024
Debt Instrument [Line Items]
Coupon rate, fixed rate notes	3.45%			3.45%	3.45%
Face amount				$ 500,000,000	$ 500,000,000