Debt Instrument, Deferral Period for Interest Payments

No definition available.

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- Definition

Letters of Credit, Maximum Borrowing Capacity

+ References

No definition available.

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- Definition

Line of Credit Facility, Covenant Terms - Monetary

+ References

No definition available.

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- Definition

Line of Credit Facility, Covenant Terms - Percent

+ 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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Period Type:	instant

- 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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- Definition

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

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- 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.

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- Definition

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

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- Definition

Fair value amount of debt instrument that was repurchased.

+ References

No definition available.

+ Details

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- Definition

Fixed interest rate related to the interest rate derivative.

+ References

No definition available.

+ Details

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- Definition

Principal amount outstanding of advances made and reported by Federal Home Loan Bank (FHLBank) relating to the Affordable Housing Program (AHP).

+ References

No definition available.

+ Details

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- Definition

Amount of advances from the Federal Home Loan Bank (FHLB).

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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

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

+ References

No definition available.

+ Details

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- Definition

Maximum amount borrowed under the credit facility at any time during the period.

+ References

No definition available.

+ Details

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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.

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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- Definition

Describes the term of the registration payment arrangement.

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Debt - Additional Information (Details) - USD ($)			1 Months Ended	9 Months Ended	12 Months Ended
Debt - Additional Information (Details) - USD ($)	Mar. 29, 2018	Jul. 29, 2016	Apr. 30, 2017	Sep. 30, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jul. 19, 2018	Jun. 15, 2018	Mar. 15, 2018
Debt Instrument [Line Items]
Loss on extinguishment of debt				$ (6,000,000)	$ (6,000,000)	$ 0	$ 0
Term of registration statement		three
Letters of Credit, Maximum Borrowing Capacity					100,000,000
Line of Credit Facility, Covenant Terms - Monetary	$ 9,000,000,000
Line of Credit Facility, Remaining Borrowing Capacity					0
Letters of Credit Outstanding, Amount					3,000,000
Commercial paper outstanding					0
Federal Home Loan Bank, Advances, Affordable Housing Program, Principal Outstanding					0
Hartford Fire Insurance Company [Member]
Debt Instrument [Line Items]
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances					1,100,000,000
Hartford Life and Accident Insurance Company [Member]
Debt Instrument [Line Items]
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances					600,000,000
Commercial Paper
Debt Instrument [Line Items]
Credit facility					750,000,000			$ 750,000,000
Revolving Credit Facility
Debt Instrument [Line Items]
Borrowings outstanding under revolving credit facility					750,000,000
Line of Credit Facility, Covenant Terms - Percent				35.00%
Scenario, Adjustment [Member] \| Commercial Paper
Debt Instrument [Line Items]
Credit facility								$ 1,000,000,000
Scenario, Adjustment [Member] \| Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility					1,000,000,000
Previously Reported [Member]
Debt Instrument [Line Items]
Letters of Credit, Maximum Borrowing Capacity					250,000,000
Line of Credit Facility, Covenant Terms - Monetary					$ 13,500,000,000
Junior Subordinated Debentures
Debt Instrument [Line Items]
Interest deferral period					10 years
Redemption price					100.00%
6.3% Notes, due 2018
Debt Instrument [Line Items]
Interest rate					6.30%
6.0% Notes, due 2019
Debt Instrument [Line Items]
Interest rate					6.00%
5.5% Notes, due 2020
Debt Instrument [Line Items]
Interest rate					5.50%
5.125% Notes, due 2022
Debt Instrument [Line Items]
Interest rate					5.125%
5.95% Notes, due 2036
Debt Instrument [Line Items]
Interest rate					5.95%
6.625% Notes, due 2040
Debt Instrument [Line Items]
Interest rate					6.625%
6.1% Notes, due 2041
Debt Instrument [Line Items]
Interest rate					6.10%	6.10%
6.625% Notes, due 2042
Debt Instrument [Line Items]
Interest rate					6.625%
4.3% Notes, due 2043
Debt Instrument [Line Items]
Interest rate					4.30%	4.30%
4.4% Notes, due 2048
Debt Instrument [Line Items]
Interest rate					4.40%					4.40%
7.875% Notes, due 2042
Debt Instrument [Line Items]
Interest rate					7.875%	7.875%
Debt Instrument, Face Amount					$ 600,000,000
3 month Libor 2.125% Notes, due 2067 [1]
Debt Instrument [Line Items]
Debt Instrument, Face Amount					$ 500,000,000
3 month Libor 2.125% Notes, due 2067 [1] \| LIBOR
Debt Instrument [Line Items]
Variable interest rate			2.125%		2.125%
Derivative, Fixed Interest Rate			4.39%
8.125% Notes, due 2068
Debt Instrument [Line Items]
Interest rate					8.125%				8.125%
Debt Instrument, Face Amount									$ 500,000,000
Senior Note Six Point Three Due in Two Thousand Eighteen [Member] \| Senior Notes
Debt Instrument [Line Items]
Interest rate										6.30%
Debt repaid										$ 320,000,000