U.S. cable operator Comcast Corp is asking investment banks to increase a bridge financing facility by as much as $60 billion so it can make an all-cash offer for the media assets that Twenty-First Century Fox Inc has agreed to sell to Walt Disney Co for $52 billion.

Comcast only plans to proceed with the bid if a federal judge allows AT&T Inc’s planned $85 billion acquisition of Time Warner Inc to proceed as the deal would be another example of a large TV distributor attempting to own a TV programmer. The U.S. Department of Justice has opposed the AT&T-Time Warner deal over antitrust concerns, and a decision from a judge is expected in June.

The exact value of Comcast’s new bid for the Fox assets is not yet clear, although the $60 billion in new financing indicates it is seeking significant firepower to outbid Disney. Comcast already has a $30 billion bridge loan to finance its Sky offer.

Fox ended up announcing an all-stock deal with Disney for $29.54 per share. In the regulatory filing, Disney and Fox cited regulatory hurdles as reasons to reject Comcast’s bid, even though they did not reference it by name.