Commercial Paper, Maximum Borrowing Capacity

No definition available.

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- Definition

Debt instrument, repurchased face amount.

+ References

No definition available.

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- Definition

Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.

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- Definition

States whether the entity was in compliance with the debt covenants throughout the reporting period, and describes facts and circumstances of any compliance failure.

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- Definition

Description of minimum financial levels (for example, tangible net worth and working capital) and achievement of certain financial ratios (for example, working capital ratio and debt service coverage ratio), and adherence to certain clauses which generally require or restrict certain actions (for example, entering into a debt arrangement with equal or greater seniority, and selling or discontinuing a certain business segment or material subsidiary) to be in compliance with the covenant clauses of the debt agreement. May also include a discussion of the adverse consequences that would result if the entity violates or fails to satisfy the covenants.

+ References

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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.

+ References

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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.

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Period Type:	instant

- Definition

Gross amount of debt extinguished.

+ References

No definition available.

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- Definition

Amount of advances from Federal Home Loan Bank (FHLBank) maturing in the next rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ 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

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.

+ 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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- Definition

The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate.

+ References

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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.

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- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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Debt (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
Debt (Narrative) (Details) - USD ($) $ in Millions	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Aug. 17, 2020	May 05, 2020	Dec. 31, 2019	Sep. 09, 2019
Debt Instrument [Line Items]
Repayments of Long-term Debt			$ 964	$ 923
Loss (gain) on extinguishment of debt	$ 30	$ 0	34	$ (1)
Short-term borrowings	150		150				$ 700
Commercial paper							400
Other senior unsecured notes [Member]
Debt Instrument [Line Items]
Repurchased Face Amount	79		79
Loss (gain) on extinguishment of debt	30		30
Extinguishment of Debt, Amount	109		$ 109
Senior Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Covenant description			Our ability to borrow under these credit facilities is subject to compliance with certain covenants, including covenants requiring us to maintain a defined debt-to-capital ratio of not more than 60%, subject to increase in certain circumstances set forth in the applicable credit agreement.
Covenant compliance			As of September 30, 2020, our debt-to-capital ratio, as defined and calculated under the credit facilities, was 38.1%. We do not believe the restrictions contained in any of our credit facility covenants materially affect our financial or operating flexibility. As of September 30, 2020, we were in compliance with all of the debt covenants under these credit facilities.
Convertible Debt [Member]
Debt Instrument [Line Items]
Repurchased Face Amount	0		$ 40
Repayments of Long-term Debt	0		155
Loss (gain) on extinguishment of debt	0		4
Lines of Credit [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	400		400
Short-term borrowings	0		0				50
Federal Home Loan Bank Advances [Member]
Debt Instrument [Line Items]
Federal Home Loan Bank, advances, short-term	$ 150		$ 150				$ 650
Debt instrument interest rate	0.20%		0.20%				1.664%
Surplus Notes [Member]
Debt Instrument [Line Items]
Long-term Debt	$ 25		$ 25				$ 25
Senior Unsecured Notes [Member]
Debt Instrument [Line Items]
Long-term Debt	20,549		20,549				18,815
Senior Unsecured Notes [Member] \| Four Point Three Five Zero Percent Due Two Thousand Twenty [Member]
Debt Instrument [Line Items]
Debt instruments, repurchased face amount					$ 700
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate					4.35%
Senior Unsecured Notes [Member] \| Two Point Three Seven Five Due Two Thousand Twenty Five [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount						$ 400		$ 850
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate						2.375%		2.375%
Senior Unsecured Notes [Member] \| Two Point Two Five Zero Due Two Thousand Thirty [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount						$ 1,100
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate						2.25%
Senior Unsecured Notes [Member] \| Three Point One Two Five Due Two Thousand Fifty [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount						$ 1,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate						3.125%
Commercial Paper Program
Debt Instrument [Line Items]
Commercial paper authorized	3,500		3,500
Commercial paper	0		0				$ 400
364-Day Facility [Member] \| Senior Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	1,000		1,000
5-Year Facility [Member] \| Senior Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 2,500		$ 2,500