Brad Pitt is seeking joint custody of his six children with estranged wife Angelina Jolie, according to a divorce filing.<br />The actor's request comes after Jolie asked for full physical custody of all their children.<br />Jolie cited "irreconcilable differences" as a reason for the couple's breakup on September 19.<br />Pitt was accused of being abusive towards his eldest son Maddox, 15, on a plane earlier that month.