The Federal Reserve released minutes from its last meeting, where it discussed the procedures for hiking interest rates.
The Australian dollar fell more than half a percent, on a slide in prices of iron ore, one of the country's biggest exports.
The dollar teetered near a three month low against the yen on Monday, hit by falling U.S. interest rates.
The dollar extended losses against the yen, trading near two month lows and putting it on course for a big weekly loss.
The euro was back against the dollar on Friday, rebounding from a 2-1/2-month trough as investors booked profits on bearish positions.
The euro bounced back thanks to the Bank's of England's loose monetary policy and Asian central banks.
The euro steadied against the dollar on Wednesday and rebounded from a 16-month trough against the British pound.
Traders borrowing U.S. dollars to fund investments in other currencies should beware, with analysts expecting the greenback to strengthen.
The euro fell against sterling on growing bets the European Central Bank and the Bank of England will take opposite courses of action.
The euro slid after strong words from European Central Bank chief Mario Draghi halted its march to a 2-1/2 year high.
The euro slid further in early trade in Europe on Friday after strong words from European Central Bank chief Mario Draghi that halted its march this year to a 2-1/2 year high.
The US Dollar, euro and British pound are all falling following a meeting of the European Central Bank.
Positive signs from the US economy have failed to boost the greenback, while tensions in Ukraine are driving traders to the yen.
The yen rose to a two-week high against the dollar on Monday after a survey showing China's manufacturing activity contracted.
The dollar inched up from a three-week low on Friday, on expectations of a robust U.S. jobs number, after a weak growth report earlier this week.
The euro trod water in early European trade on Wednesday with all eyes on euro zone inflation numbers due later.
The euro traded at multi-week highs against the yen early on Tuesday and held firm against the dollar after a strong performance overnight.
The euro rose to a two-week high against the dollar on Monday, supported by expectations inflation in the euro zone will tick up.
Key U.S. data culminating in Friday's closely-watched jobs report and the Fed's target measure of inflation a day earlier may offer some sustenance to a directionless dollar, CNBC's latest market survey showed.
The dollar struggled against the yen and Swiss Franc as rising tensions in Ukraine offset optimism about U.S. economic growth.