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Cover page Entity Listings - $ / shares | 6 Months Ended |
--- | --- | ---
Jun. 30, 2019 | Jul. 29, 2019
Entity Listings [Line Items] |  |
Security Exchange Name | NYSE |
Entity Common Stock, Shares Outstanding |  | 361,581,394
Entity Listing, Par Value Per Share | $ 0.01 |
HIG [Member] |  |
Entity Listings [Line Items] |  |
Trading Symbol | HIG |
HIG 41 [Member] |  |
Entity Listings [Line Items] |  |
Trading Symbol | HIG 41 |
HGH [Member] |  |
Entity Listings [Line Items] |  |
Trading Symbol | HGH |
HIG PR G [Member] |  |
Entity Listings [Line Items] |  |
Trading Symbol | HIG PR G |
Common Stock, par value $0.01 per share [Domain] |  |
Entity Listings [Line Items] |  |
Title of 12(b) Security | Common Stock, par value $0.01 per share |
6.10% Notes due October 1, 2041 [Domain] |  |
Entity Listings [Line Items] |  |
Title of 12(b) Security | 6.10% Notes due October 1, 2041 |
7.875% Fixed-to-Floating Rate Junior Subordinated Debentures due 2042 [Domain] |  |
Entity Listings [Line Items] |  |
Title of 12(b) Security | 7.875% Fixed-to-Floating Rate Junior Subordinated Debentures due 2042 |
Depositary Shares, Each Representing a 1/1,000th Interest in a Share of 6.000% Non-Cumulative Preferred Stock, Series G, par value $0.01 per share [Domain] |  |
Entity Listings [Line Items] |  |
Title of 12(b) Security | Depositary Shares, Each Representing a 1/1,000th Interest in a Share of 6.000% Non-Cumulative Preferred Stock, Series G, par value $0.01 per share |

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- Definition Indicate number of shares or other units outstanding of each of registrant's classes of capital or common stock or other ownership interests, if and as stated on cover of related periodic report. Where multiple classes or units exist define each class/interest by adding class of stock items such as Common Class A [Member], Common Class B [Member] or Partnership Interest [Member] onto the Instrument [Domain] of the Entity Listings, Instrument. + References No definition available. + Details
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- Definition The par value per share of security quoted in same currency as Trading currency. Example: '0.01'. + References No definition available. + Details
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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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- Definition Title of a 12(b) registered security. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Exchange Act -Number 240 -Section 12 -Subsection b + Details
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- Definition Name of the Exchange on which a security is registered. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Exchange Act -Number 240 -Section 12 -Subsection d1-1 + Details
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- Details
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- Details
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- Details
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- Details
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