Akademik

Н-72
НЕЗАВИСИМО ОТ ТОГО ЧТО subord Conj, concessive) without consideration of the fact that, not contingent upon the fact that
regardless of (the fact that)
irrespective of (the fact that)
(in limited contexts) independent of (the fact that).

Большой русско-английский фразеологический словарь. — М.: ACT-ПРЕСС КНИГА. . 2004.