Additional Available Increase In Borrowing Capacity

No definition available.

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- Definition

Borrowing

+ References

No definition available.

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- Definition

Debt instrument, maturity year.

+ References

No definition available.

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- Definition

Federal Home Loan Bank Borrowing Amount Outstanding

+ References

No definition available.

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- Definition

Unsecured Revolving Credit Facility Additional Borrowing Capacity

+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

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-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(2))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Gross amount of debt extinguished.

+ References

No definition available.

+ Details

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- Definition

Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 325

-Section 45

-Paragraph 1

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

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-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 22

-Article 5

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-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

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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

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

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- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 10

-Section 50

-Paragraph 1

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-Section S99

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-Subparagraph (SX 210.12-04.(a))

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- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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- Definition

The cash outflow for the settlement of long-term borrowing, with the highest claim on the assets of the entity in case of bankruptcy or liquidation, as it matures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (b)

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-Name Accounting Standards Codification

-Glossary Financing Activities

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- Definition

Amount of cash outflow to acquire Federal Home Loan Bank (FHLB) stock.

+ References

No definition available.

+ Details

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- Definition

The cash inflow from a borrowing with the highest claim on the assets of the entity in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle, if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

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-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-Subparagraph (b)

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Debt - Additional Information (Detail) (USD $)	12 Months Ended	1 Months Ended
Debt - Additional Information (Detail) (USD $)	Dec. 31, 2014	Sep. 30, 2014	Feb. 28, 2015	Aug. 31, 2014	Feb. 28, 2014	Nov. 30, 2014
Debt Instrument [Line Items]
Aggregate of long term debt maturing, 2015	$ 335,000,000
Aggregate of long term debt maturing, 2016	1,000,000,000
Aggregate of long term debt maturing, 2017	1,500,000,000
Aggregate of long term debt maturing, 2018	368,000,000
Aggregate of long term debt maturing, 2019	1,500,000,000
Aggregate of long term debt maturing, Thereafter	6,000,000,000
CNA Financial [Member]
Debt Instrument [Line Items]
Acquisition of FHLBC stock	16,000,000
Outstanding borrowings	0
Additional liquidity	330,000,000
Revolving Credit Agreement [Member] \| Diamond Offshore [Member]
Debt Instrument [Line Items]
Revolving credit facility maximum borrowing capacity	1,500,000,000
Borrowings under credit facility	0
Maturity date	2019
Revolving Credit Agreement [Member] \| Boardwalk Pipeline [Member]
Debt Instrument [Line Items]
Debt instrument principal amount	120,000,000
Debt instrument interest rate	1.50%
Debt maturity date	Apr. 27, 2017
Revolving credit facility maximum borrowing capacity	1,000,000,000
Available borrowing capacity	880,000,000
Revolving Credit Agreement [Member] \| CNA Financial [Member]
Debt Instrument [Line Items]
Debt maturity date	Apr. 19, 2016
Revolving credit facility maximum borrowing capacity	250,000,000
Additional available increase in borrowing capacity	100,000,000
Borrowings under credit facility	0
5.2% Senior Notes Due 2014 [Member] \| Diamond Offshore [Member]
Debt Instrument [Line Items]
Debt instrument interest rate		5.20%
Repayment of debt		250,000,000
4.0% Senior Notes Due 2024 [Member] \| CNA Financial [Member]
Debt Instrument [Line Items]
Debt instrument principal amount					550,000,000
Debt instrument interest rate					4.00%
Debt maturity date	May 15, 2024
5.9% Senior Notes Due 2014 [Member] \| CNA Financial [Member]
Debt Instrument [Line Items]
Debt instrument principal amount	549,000,000
Debt instrument interest rate	5.90%
5.0% Senior Notes Due 2024 [Member] \| Boardwalk Pipeline [Member]
Debt Instrument [Line Items]
Debt instrument principal amount						350,000,000
Debt instrument interest rate						5.00%
Debt maturity date	Dec. 15, 2024
5.1% Notes Due 2015 [Member] \| Boardwalk Pipeline [Member]
Debt Instrument [Line Items]
Maturity date	2015
5.1% Notes Due 2015 [Member] \| Subsequent Event [Member] \| Boardwalk Pipeline [Member]
Debt Instrument [Line Items]
Debt instrument interest rate			5.10%
Net proceeds from issuance of debt instruments			275,000,000
4.6% Notes Due 2015 [Member] \| Boardwalk Pipeline [Member]
Debt Instrument [Line Items]
Debt instrument interest rate	4.60%
Maturity date	2015
Aggregate principal amount refinancing	250,000,000
4.8% Mortgage Loan [Member] \| Loews Hotels [Member]
Debt Instrument [Line Items]
Debt instrument interest rate				4.80%
Refinanced debt				125,000,000
4.1% Mortgage Loan Due September 2024 [Member] \| Loews Hotels [Member] \| Legal Defeasance Agreement [Member]
Debt Instrument [Line Items]
Debt instrument principal amount				$ 300,000,000
Debt instrument interest rate				4.10%
Debt maturity date				Sep. 30, 2024