An accelerated one.
Depreciation for a capital expense usually takes years (like 8-10). By closing it, they can take it all at once.
Depreciation is a tax benefit. So, yes, it's a tax write-off. But one that would have happened anyway over time.
Iger needs in the next two quarters to show significant positives on the financials to overcome Wall Street's new found reticence about streaming (even tho they're all agreeing the linear/cable is dying, and streaming will eventually take over the home entertainment market, so they're dinging Disney for not having a more profitable streaming and for having a decreased revenue from linear/cable).
He also needs to build up a few Billion dollars to buy out Comcast from Hulu and not have that freak out Wall Street... who just want their dividends back.