The end of what had seemed a fairytale marriage between Nicole Kidman and Keith Urban is terrible news for romantics, not to mention their children. But it's potentially great news for lawyers, accountants and real estate agents.

As one of the highest profile celebrity couplings since, oh, Nicole Kidman and Tom Cruise, a Kidman-Urban split signals a major tallying, and likely split, of assets. And those assets are considerable.

Short of hacking the (former) couple's bank accounts - something the late News of the World would no doubt have tackled with glee - we can only lick a finger and stick it in the air to gauge what the sums actually are. So in that spirit, here goes.

The website Celebrity Net Worth has been obsessing over the asset pools of The Rich and Famous since 2008, and claims to have assembled a "team of editors and industry insiders" to assess the accuracy of their best stabs, based on "data rooted in financial analysis, market research, and inside sources". Yes, we have our doubts too, but it will have to do.