"We have values to uphold, and I can't express enough that they have broken my trust, and their teammates' trust. No-one is bigger than the team" said Kidwell.
New Zealand Rugby League are 100 per cent behind this decision," said chief executive Alex Hayton.
"We will work to try and remedy and build our trust back with the public."
Bromwich and Proctor were remorseful when informed of the decision by Kidwell, but understood and accepted the decision.
"We're going into a World Cup campaign and I want everyone to understand that we have values to uphold," said Kidwell.
Kidwell said that the severity of the punishment is a message to the other players in the Kiwis camp.
"This is what we're trying to build here, the integrity of the jersey - We expect you to hold up those values."
New Zealand faces Samoa, Scotland and Tonga in pool play at the World Cup.