... media company Comcast Corp. announced an all-cash proposal to acquire U.K.-based pan-European pay-TV operator Sky PLC in a transaction valued at $41 billion. + We are placing our ratings, including the 'A-' corporate credit rating, on Comcast on CreditWatch with negative implications pending clarity of the transaction. + The negative CreditWatch placement reflects the potential for sustained higher leverage. This could be exacerbated by a potential bidding war for Sky which could lead to a higher purchase price which, if Comcast were to win, could weaken credit measures such that they may no longer support our 'A-' corporate credit rating on Comcast. NEW YORK (S&P Global Ratings) Feb. 28, 2018--S&P Global Ratings today placed its ratings, including the 'A-' corporate credit rating, on Philadelphia, Pa.-based telecommunications and media company Comcast Corp. on CreditWatch with negative implications. The 'A-2' short-term rating is excluded...