in any case; no matter what

to stop managing or being involved in a matter; to abandon responsibility

to pay scant regard to someone or something; to ignore or neglect completely

acting recklessly or impulsively based on a simplistic or hopelessly optimistic assumption

of undetermined status or falling outside the jurisdiction of multiple authorities, often resulting in a lack of governance

to receive pay or benefits without fulfilling one's responsibilities or performing any work

to witness a situation or problem but choose not to intervene or take responsibility

it doesn't matter whether a cat is white or black; as long as it catches mice it's a good cat (Deng Xiaoping's famous saying favoring pragmatism over ideological purity)

(coll.) to wash one's hands of a matter