Biggest contracts in NBA history

Basketball is where the money is at. The highest-paid NBA players are given contracts that pay them a quarter-plus of a billion these days. Even all-time legends like LeBron James and Michael Jordan already have net worths in the billions. Every year, superstar players sign new contracts that make them paid more handsomely than the last guy, but who have signed the biggest contracts in NBA history? Note: Contract information is from spotrac.com T15.