For the banks that worked on the loan deal, it translates to a payout of about $200 million, according to Jeffery Nassof of Freeman and Co., an industry consulting group. Broadly, companies have issued a record $989 billion in corporate bonds this year, according to Dealogic. It could be better still for Wall Street, but one piece of the M&A-debt puzzle that generates the biggest profits for Wall Street — the private-equity industry — is mostly still absent. PE firms have scaled back big bets after so many huge precrisis buyouts flamed out. Because leveraged buyouts are riskier than corporate...