The dollar rallied on Friday, helped by unexpectedly strong U.S. retail sales data and a slide in the yen to seven-year lows against the dollar on bets Japanese Prime Minister Shinzo Abe will call early elections and delay a sales tax increase.
The euro also fell against the dollar and briefly dipped below $1.24 despite better-than-expected euro zone economic growth numbers. The currency, which traded near $1.40 in May, is now close to two-year lows and was last off 0.55 percent above $1.24.
The dollar index added to gains after a U.S. retail sales report bolstered views of a strengthening U.S. economy.
The index was last ahead 0.60 percent after touching 88.267, a high last seen in June 2010, according to Reuters data.