"Laugh all the way to the bank" is an idiom used to convey a sense of achieving great success and making a lot of money. There are several synonyms that can be used to convey the same meaning, such as "raking in the dough", "making a killing", "striking gold", and "hitting the jackpot". All of these idioms are commonly used to describe financial success and a sense of achievement. Additionally, they are often used to describe a situation where someone has outsmarted or succeeded over someone else. Regardless of the synonym used, they all convey the same sense of financial success and winning.