This is the 13022nd most frequent Russian word.
любым
"Любым" means "any" or "any kind of" (instrumental case of "любой").
The word 'любым' is used here to indicate choice or possibility, emphasizing that any method can be appropriate.
Он может решить задачу любым способом.
He can solve the problem by any means.
In this sentence, 'любым' describes the passport, indicating that no specific type of passport is required, any will suffice.
Путешествовать можно в любую страну с любым паспортом.
You can travel to any country with any passport.
Here, 'любым' is derived to 'любой' to agree with the noun in nominative case, showing unrestricted selection among the options presented.