Rupert Murdoch, 82, just bought the top four floors of One Madison, a new Manhattan condo building. Murdoch bought floors 57 to 60, which total 10,160 square feet, from the developer. They include two units: a 6,850-square-foot triplex penthouse that had been on the market for $50 million, and a three-bedroom apartment on the floor below that had been listed for $16.5 million, said Leslie Wilson, senior vice president of sales at Related Companies and director of sales at One Madison. The two apartments are unconnected, but could easily be combined. Luckily for the new owner, the triplex penthouse is equipped with its own private elevator!