GENWORTH FINANCIAL INC, 10-K/A filed on 4/10/2020
Amended Annual Report
v3.20.1
Cover - USD ($)
 12 Months Ended
Dec. 31, 2019
Apr. 01, 2020
Jun. 30, 2019
Cover [Abstract]      
Document Type 10-K/A    
Amendment Flag true    
Amendment Description This Amendment No. 1 (this "Amendment") on Form 10-K/A is being filed with respect to Genworth Financial, Inc.'s Annual Report on Form 10-K for the fiscal year ended December 31, 2019 filed with the Securities and Exchange Commission (the "SEC") on February 27, 2020 (the "Form 10-K"). This Amendment updates Part III to contain certain additional information required therein.    
Document Annual Report true    
Document Transition Report false    
Document Period End Date Dec. 31, 2019    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2019    
Current Fiscal Year End Date --12-31    
Entity File Number 001-32195    
Entity Registrant Name GENWORTH FINANCIAL, INC.    
Entity Central Index Key 0001276520    
Entity Tax Identification Number 80-0873306    
Entity Incorporation, State or Country Code DE    
Entity Address, Address Line One 6620 West Broad Street    
Entity Address, City or Town Richmond    
Entity Address, State or Province VA    
Entity Address, Postal Zip Code 23230    
City Area Code (804)    
Local Phone Number 281-6000    
Title of 12(b) Security Class A Common Stock, par value $.001 per share    
Trading Symbol GNW    
Security Exchange Name NYSE    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 1,900,000,000
Entity Common Stock, Shares Outstanding   505,126,098