American companies are increasingly looking like some of the biggest beneficiaries of Mario Draghi's unprecedented efforts to stimulate Europe's economy.

U.S. companies are for the first time the biggest borrowers of euro-denominated corporate bonds, issuing a record 87.7 billion euros (US$93.49 billion) of debt, according to data compiled by Bloomberg. Companies from Apple Inc. to McDonald's Corp. have made up a fifth of total new issuance in the market, more than any European country and up from just 1.5 percent five years ago.

Draghi's easy-money policies are making it cheaper than ever for corporate America to cross the Atlantic to issue debt. That's because the European Central Bank (ECB) is pledging to boost stimulus just as Federal Reserve policy makers are prepared to raise interest rates for the first time in a decade. The difference between borrowing costs in the U.S. and Europe has widened to the most ever, and few see the gap closing anytime soon.