The couple, who split last month after five years of marriage, agreed to conditions to end their union, with the terms that the actress will not speak about her estranged spouse's personal life or his religion, Scientology.
"Confidentiality was the key. If Katie hadn't signed up to remain silent it could have become a very messy legal battle," mirror.co.uk quoted a source as saying.
Representatives of both stars have insisted the details of their settlement will be kept under wraps, though it is believed Holmes will get primary custody of their six-year-old daughter Suri, with Cruise allowed visit rights.
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