...December 12, 2023 HOUSTON (S&P Global Ratings) Dec. 12, 2023--S&P Global Ratings revised the outlook to negative from stable and affirmed its '##-' long-term rating on the Chester County Health and Education Facilities Authority, Pa.'s debt issued for Main Line Health System (MLH). MLH is the parent company of Main Line Health. "The outlook revision reflects our view of MLH's weakened balance sheet profile on increased operating losses, which provides less cushion in light of budgeted operating losses for fiscal 2024 and potential for continued operating pressures that could keep margins weak and debt service coverage low over the outlook period," said S&P Global Ratings credit analyst Kay Sifferman....