Borrowings and Other Financings - Long Term Borrowings (Parenthetical) (Detail)	6 Months Ended
Jun. 30, 2024 USD ($)
6.50% Senior Notes, Due 2034 \| Genworth Holdings
Debt Instrument [Line Items]
Interest rate	6.50%
Debt instrument, maturity year	2034
Senior notes option to redeem	100.00%
Repurchase amount required per replacement capital covenant	$ 1,000
Floating Rate Junior Subordinated Notes, due 2066 \| Genworth Holdings
Debt Instrument [Line Items]
Debt instrument, maturity year	2066
Repurchase amount allowed per replacement capital covenant	$ 2,000
6.50% Senior Notes, Due 2025 \| Enact Holdings
Debt Instrument [Line Items]
Interest rate	6.50%
Debt instrument, maturity year	2025
6.25% Senior Notes, due 2029 \| Enact Holdings
Debt Instrument [Line Items]
Interest rate	6.25%
Debt instrument, maturity year	2029

Year when the debt instrument is scheduled to be fully repaid, in YYYY format.

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Amount that my be repurchased upon certain repurchase of senior notes per replacement capital covenant.

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