XML 66 R46.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Background and Business Description Tier 2 Commitment (Details) $ in Millions | Feb. 12, 2018 USD ($)
--- | ---
Tier 2 Note Security in RMBS Litigation Settlement Proceeds | $ 1,600

X
- Definition Tier 2 Note Security in RMBS Litigation Settlement Proceeds + References No definition available. + Details
Name: | ambc_Tier2NoteSecurityinRMBSLitigationSettlementProceeds
Namespace Prefix: | ambc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant