DETROIT -- Tennessee Titans controlling owner Amy Adams Strunk said the Titans were fined over their ownership structure shortly after she assumed her role in March 2015.

A league source said the fine was six figures; a second said it was "a lot."

Strunk said the team appealed, but the league still has the money.

"We don't think there's anything wrong with our structure," Strunk said Sunday as she headed for the locker room at Ford Field after the Titans' 16-15 win over the Lions. "So that's where we differ."

Strunk said the disagreement is not heading to a lawsuit.

"We are going to get it resolved," she said.

Strunk is in charge of the team, but she does not own a majority stake.

She and her sister, Susie Adams Smith, each own one-third of the team; the wife of team founder Bud Adams' deceased son and her two sons each own 11 percent.

"We don't comment on specifics about our owners' relations with the league," Titans CEO and president Steve Underwood said. "As you know, we have had an ongoing dialogue with the league for over two years, and we expect to continue this conversation.

"Just so the record is clear, the club is not for sale and has never been for sale."

The NFL said it would not comment.

At the Super Bowl in San Francisco, NFL commissioner Roger Goodell addressed the team's ownership.

"We have ownership policies, the ownership policies are lengthy, but essentially they require a single owner to represent the club locally, but also at the league level," he said. "We work on the basis of 32 individual owners, each having a vote. When league matters come up, whatever they may be, we work on a vote of 24 of the 32. It's a very important principle to owners and their partners.

"They want to know who their partner is, they want to know who's responsible for how the team is operated locally and they want to know that their partner is sitting at the table when they are making difficult decisions. So we will try to encourage our policies to encourage that type of behavior."

Before that news conference, New York Giants team president and CEO John Mara said he didn't think there was a big issue in Tennessee and said the steady hand of Underwood made him comfortable with the Titans.

"I don't know if it's a major issue, no," he told ESPN. "I don't think so. As long as you have a good, capable executive running the team, which I think Steve is, and I think they've got a good team, a good coach and a good general manager. They'll be fine."