Depending on context, could it also mean 'it is not for me to decide'?
It could, yes. I would have included that in "It's not my responsibilty [to do whatever the subject of the conversation is, whether it's a decision or something else]".
That would lead to "That's not down to me to decide, is it?"
It could, yes. I would have included that in "It's not my responsibilty [to do whatever the subject of the conversation is, whether it's a decision or something else]".
That would lead to "That's not down to me to decide, is it?"
Thanks, ems. I thought it was implied in "it's not my responsibility" but I needed reassurance.