VZ's market cap will increase to reflect the dilution needed to purchase Vod's stake. Meaning, VZ's cap will increase with an added 60 billion in shares. So, it's not god news for shareholders short term. 130 billion is a hefty price tag.
When figuring out the actual value of VZ wireless you have to take into consideration that VZ paid VOD a nice premium on the value, the whole VZ wireless is impossible to figure out its value unles it is spun of from VZ