Routine business cycle downswings don't require over a trillion dollars to prevent the economy from tailspinning into another Great Depression.

If you add up the TARP and all the alphabet soup lending support programs, the stimulus package/s, and Fed's quantitative easing intervention, you're talking well over a trillion dollars, and we're still not out of it yet.

This was a speculative debt bubble followed by the inevitable financial crisis. See Rogoff & Reinhardt. Definitely not part of the business cycle.