The couple separated "amicably" back in September 2012 after nine years of marriage. Poehler, 42, has reportedly been dating comedian Nick Kroll since last year, while Arnett, 43, has been linked to Billy Joel's ex-wife, Katie Lee.
Arnett asked for joint legal and physical custody of their two sons, Abel and Archie.
Notable deaths of 2014 [PHOTOS]
Reports: Mila Kunis gives birth to baby girl