My Company's Definition of Domestic Partner

I was going through my insurance stuff today as I make doctor and dentist appointments and I happened across the following:

A Domestic Partner is defined as a person of the same or opposite sex who:

• shares your permanent residence;
• has resided with you for no less than one year;
• is no less than 18 years of age;
• is financially interdependent with you and has proven such interdependence by providing documentation of at least two of the following arrangements: common ownership of real property or a common leasehold interest in such property; common ownership of a motor vehicle; a joint bank account or a joint credit account; designation as a benificiary for life insurance or retirement benefits or under yours or your partner's will; assignment of durable power of attorney; or such other proof as is considered by [my company] to be sufficient to establish financial interdependency under the circumstances of your particular case;
• is not a blood relative any closer than would prohibit legal marriage;
• has signed jointly with you, a notarized affidavit which has been made available to [my company].

Both of our employers insure us pretty dang well, so I'm not concerned about going through any of these exercises for insurance purposes. Good to know, though.