U hear this about
Italy these days
Total outstanding sovereign debt 
plus a trillion and near  a trillion and a half euros
Peanuts really 
for the league of MNC CB's
 
Ie corporate clique dominated 
And  
decisively   influenced 
  central bankers 
Even the ECB acting alone can simply create that without much real consequence on prices 
Asset
commodity 
Industrial Product  
wage rates  
or otherwise
Value of euro ?
Well that is where the other league members enter 
To preserve the forex relationships more or less as is 
The others might need to increase euro reserves 
And add more other moneys into the global currency systems 
Two words there apply
Liquidity trap
Both ongoing and global