| Standard Label: | Defined Benefit Plans Benefit Obligation [Roll Forward] |
| Name: | nfp:DefinedBenefitPlansBenefitObligationRollForward |
| Identifier: | nfp_DefinedBenefitPlansBenefitObligationRollForward |
| Documentation: | |
| Category of Term: | Abstract |
| DefinedBy: | https://asc.fasb.org/topic&trid=2209682 |
| References: | (Coming Soon!) |
| Balance type: | none |
| Period type: | duration |
| Data type: | xbrli:stringItemType |
Last updated: 4/28/2020 2:45:19 PM