XML 201 R100.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Goodwill & Other Intangible Assets - Goodwill Carrying Value (Details) | 12 Months Ended
--- | ---
Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Goodwill [Roll Forward] |  |  |
Beginning balance | $ 1,290,000,000 | $ 1,290,000,000 |
Goodwill related to acquisitions | 623,000,000 | 0 |
Ending balance | 1,913,000,000 | 1,290,000,000 | $ 1,290,000,000
Goodwill, Impairment Loss | $ 0 | 0 | 0
Number of Reporting Units | 5 |  |
Operating Segments | Property and Casualty, Commercial Insurance [Member] |  |  |
Goodwill [Roll Forward] |  |  |
Beginning balance | $ 38,000,000 | 38,000,000 |
Goodwill related to acquisitions | 623,000,000 | 0 |
Ending balance | 661,000,000 | 38,000,000 | 38,000,000
Operating Segments | Property and Casualty, Personal Insurance [Member] |  |  |
Goodwill [Roll Forward] |  |  |
Beginning balance | 119,000,000 | 119,000,000 |
Goodwill related to acquisitions | 0 | 0 |
Ending balance | 119,000,000 | 119,000,000 | 119,000,000
Operating Segments | Mutual Fund [Member] |  |  |
Goodwill [Roll Forward] |  |  |
Beginning balance | 180,000,000 | 180,000,000 |
Goodwill related to acquisitions | 0 | 0 |
Ending balance | 180,000,000 | 180,000,000 | 180,000,000
Operating Segments | Group Benefits |  |  |
Goodwill [Roll Forward] |  |  |
Beginning balance | 723,000,000 | 723,000,000 |
Goodwill related to acquisitions | 0 | 0 |
Ending balance | 723,000,000 | 723,000,000 | 723,000,000
Corporate |  |  |
Goodwill [Roll Forward] |  |  |
Beginning balance | 230,000,000 | 230,000,000 |
Goodwill related to acquisitions | 0 | 0 |
Ending balance | 230,000,000 | 230,000,000 | 230,000,000
Corporate | Mutual Fund [Member] |  |  |
Goodwill [Roll Forward] |  |  |
Beginning balance | 92,000,000 | 92,000,000 |
Ending balance | 92,000,000 | 92,000,000 | 92,000,000
Corporate | Group Benefits |  |  |
Goodwill [Roll Forward] |  |  |
Beginning balance | 138,000,000 | 138,000,000 |
Ending balance | $ 138,000,000 | $ 138,000,000 | $ 138,000,000

X
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
Name: | us-gaap_Goodwill
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 + Details
Name: | us-gaap_GoodwillAcquiredDuringPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13854-109267 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13777-109266 + Details
Name: | us-gaap_GoodwillImpairmentLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_GoodwillRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment. + References No definition available. + Details
Name: | us-gaap_NumberOfReportingUnits
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_ConsolidationItemsAxis=us-gaap_OperatingSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=us-gaap_PropertyAndCasualtyCommercialInsuranceProductLineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=us-gaap_PropertyAndCasualtyPersonalInsuranceProductLineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=us-gaap_MutualFundMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=us-gaap_GroupPoliciesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidationItemsAxis=us-gaap_CorporateNonSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |