The entire game is about cash and debt.
GE Corp gets to reduce the percentage of debt remaining with the other parts of the firm by loading up Healthcare with Pension obligations and corporate debt. This benefits the overall company excluding healthcare.
Next, Corporate gets to have incremental stock equity raised but under the disguise of a new public company which will in turn will be dilutive to current GE shareholders and allow corporate another way to get access to cash without a corporate level bond issuance or additional GE stock being issued.
Overall what Healthcare is going to do is help increase cash for GE at a time when they can’t issue debt, it will reduce the pension obligations and play into the simplicity story that Wall Street wants.
For Healthcare it will not be such a great deal as the biggest issue will become cash flow for the massive pile of debt they will begin having at their new businesses. The amount of debt and other obligations is the exact same reason that Consumer and Industrial was never spun off and instead sold in pieces.