XML 86 R16.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Goodwill Level 1 (Notes) | 12 Months Ended
--- | ---
Dec. 31, 2016
Goodwill, Impaired [Abstract] |
Goodwill | The annual goodwill assessment for The Hartford's reporting units was completed as of October 31, 2016, 2015, and 2014, which resulted in no write-downs of goodwill in the respective years then ended. In 2016, all reporting units passed the first step of their annual impairment test with a significant margin.

X
- Definition The entire disclosure for goodwill. + References No definition available. + Details
Name: | us-gaap_GoodwillDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_GoodwillImpairedAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration