A Power of Attorney is a different document and provides for someone else to deal with ones financial and business affairs and it means you would be able to deal with your DH's bank accounts and investments. In the event of it being invoked, you would need to provide certified copies to your DH's bank etc.
@FlipFlops4Me and @SunnyNights - I do hope your DH is okay. Huge worry for you but many people who have minor strokes recover and live long and healthy lives. Take it as a 'warning' and try not to worry too much.
Just to clarify something here.
A POA gives someone power over your finances AND your health, when you are unable to do so yourself.
So, for example, if someone was on life support and the drs wanted to continue it, but you had given POA to ask not to have life support, your 'attorney' would be able to tell the drs that.
In the past, there used to be two separate documents, (finance and health) but now there is one POA form, which covers both making financial and medical decisions if that is what you want to cover.
When you give POA to someone (which can be sole or joint - so 2 or more siblings/adult children for example) you have to be in 'sound mind' and know what legal steps you are taking.
This is why no one can start the POA process once they have (for example) dementia, ( 'incapacity') as they are not able to understand what they are doing.
The Living Will as some people are calling it, is really about end of life care and choices. So- things like Do Not Resuscitate - if you are 100 and have a heart attack, or keeping you alive on life support when there is no hope of recovery.
Wills, which cover your material goods, is something different again.
Usually, they would go to the next of kin (spouse or children) unless you state otherwise (or have no will.) And they can be contested by other people who feel they are owed a share of your assets.