40101 - Disclosure - Formation of Genworth and Basis of Presentation (Details)
Formation of Genworth and Basis of Presentation
Number of operating segments| Line | Label | Object Class | Period Type | Balance | Name |
| 1 | 40101 - Disclosure - Formation of Genworth and Basis of Presentation (Details) |
[Network] | http://www.genworthfinancial.com/taxonomy/role/DisclosureFormationOfGenworthAndBasisOfPresentationDetails | ||
| 2 | Formation of Genworth and Basis of Presentation |
[Abstract] | gnw:BusinessFormationAndBasisOfPresentationAbstract | ||
| 3 | Number of operating segments |
[Concept] | For Period | gnw:NumberOfOperatingSegments |