Robert Sherman (left) with Debbie Reynolds and Richard Sherman at the 1965 Academy Awards, where the brothers received the award for Best Music for Mary Poppins.

Songwriter Robert Sherman, best known for writing the infectious Disney tunes “It’s a Small World After All” and "Supercalifragilisticexpialidocious," died Monday, March 5 in London, according to a report by The Hollywood Reporter.

While few details are known about the circumstances, news of the 86-year-old's death was posted by Sherman's son Jeff late Monday evening via Facebook.

Sherman had accumulated a slew of prestigious awards throughout his career, including two Academy Awards, one Grammy Award and many more nominations. With his brother Richard Sherman -- together known as The Sherman Brothers -- he was honored with a star on the Hollywood Walk of Fame in 1976. The duo was featured in a retrospective album, released by Disney Records in 1992, titled The Sherman Brothers: Disney’s Supercalifragilistic Songwriting Team.

Sherman was born on Dec. 19, 1925 in New York City.