Prime Minister Sanae Takaichi unveiled an investment roadmap for Japan’s economy that envisions huge sums of spending, but has left key questions unanswered on how she’ll pay for the program over a sprawling 14-year timeframe.

The plan calls for investing more than ¥370 trillion ($2.3 trillion) in the 14-year period ending in March 2041, with ¥101.6 trillion earmarked for artificial intelligence and chips alone, according to documents released Wednesday. The plan is unprecedented in scale and scope, but it’s unclear how much fresh spending it would involve.