Much of it will never come to pass. For example, the part that constitutes Social Security can and almost certainly will be mostly wiped away in an instant by increasing the retirement age by a few years and increasing the payroll tax cut-off.
And I'll bet you a beer that the $132 trillion figure is calculated using year-of-expenditure, not constant dollars, which means the predictions are literally inflated.
I tried to confirm but couldn't find the original sources and methodology. AFAIU year-of-expenditure is typical and best practice for long-term budgeting, but laypeople invariably compare it to constant dollar costs, which makes such figures seem larger than they really are, particularly when they include up to 75 years of monetary inflation. For example, California High-speed Rail is always quoted in year-of-expenditure. Much of the difference in the original ~$30 billion figure to the current seemingly insane ~$100 billion figure is because the construction timeline was stretched out by another decade or more since the original proposal. The longer construction takes, the more inflation figures into projections, the greater the figures, the less public support there is, the more construction is delayed by scared politicians, etc. It's a horrible cycle.