Bank of America Corp. worries that flooded homeowners willdefault on their mortgages. The Walt Disney Co. is concerned thatits theme parks will get too hot for vacationers, while AT&TInc. fears hurricanes and wildfires may knock out its cell towers.The Coca-Cola Co. wonders whether there will still be enough waterto make Coke.

As the Trump administration rolls back rules meant to curbglobal warming, new disclosures show that the country's largestcompanies are already bracing for its effects. The documents revealhow widely climate change is expected to cascade through theeconomy—disrupting supply chains, disablingoperations, and driving away customers, but also offering new waysto make money.

The disclosures were collected by CDP, a U.K.-based nonprofitthat asks companies to report their environmental impact, includingthe risks and opportunities they believe climate change presentsfor their businesses. More than 7,000 companies worldwide filedreports for 2018, including more than 1,800 from the UnitedStates.