Joan Kroc, the widow of Ray Kroc, the founder of McDonald's, has left $1.5bn (£830m) to the Salvation Army in her will. It is thought that the figure could exceed $1.5bn after lawyers complete the administration of Kroc's estate following her death in October last year. Todd Bassett, US national commander of the Salvation Army, said: "We are obviously thrilled, but genuinely humbled by the exceptional generosity of Joan Kroc. "We recognise the deep sense of trust she has placed into our hands with this gift," he said.