The minutes indicate uncertainty over potential fault lines in financial markets as well as what level of rates would crimp demand as officials battle the hottest price pressures in 40 years. References to possibly moving to restrictive policy also signal that officials won't stop until inflation is on a convincing path back to their 2 percent target. It's a strategy that indicates policy will be more data-dependent after Fed meetings in June and July.

Atlanta Fed President Raphael Bostic suggested on Monday that a September pause "might make sense" if price pressures cool.

"It is not unreasonable to think the Fed is underlining that the path from September onward is not set in stone," Evercore ISI's Krishna Guha and Peter Williams wrote in a note to clients. "But we would be careful not to overdo this and read into the Fed language any kind of Bostic September pause-like signal."

Stocks rose after the minutes were published, while yields on Treasury notes fluctuated and the dollar pared gains. Markets continued to show traders pricing in 100 basis points (bps) of rate hikes over the next two meetings.

Vincent Reinhart, chief economist at Dreyfus and Mellon, said the committee is deploying a strategy of "muscular" gradualism with a series of half-point hikes that will push to whatever frontier is necessary to get prices lower.

"Most participants judged that 50 basis-point increases in the target range would likely be appropriate at the next couple of meetings," according to the minutes. "Many participants judged that expediting the removal of policy accommodation would leave the committee well positioned later this year to assess the effects of policy firming and the extent to which economic developments warranted policy adjustments."

Fed officials "noted that a restrictive stance of policy may well become appropriate, depending on the evolving economic outlook and the risks to the outlook," the minutes said. They said that labor demand continued to outstrip available supply.

Worry about the outlook for corporate profits and rising interest rates has also roiled financial markets. The S&P 500 stock index is down about 17 percent year-to-date, while U.S. Treasury two-year notes yielded 2.5 percent, versus about 0.8 percent in early January.

At the meeting, officials also finalized plans to allow their $8.9 trillion balance sheet to begin shrinking, putting additional upward pressure on borrowing costs. Starting June 1, holdings of Treasuries will be allowed to decline by $30 billion a month, rising in increments to $60 billion a month in September, while mortgage-backed securities holdings will shrink at a rate that starts at $17.5 billion a month and increases to $35 billion a month.

"Regarding risks related to the balance sheet reduction, several participants noted the potential for unanticipated effects on financial market conditions," the minutes said.

"I think the Fed has to risk a downturn," Ethan Harris, head of global economics research at Bank of America Corp., told Bloomberg Television. "The real question is going to come later, when we get into the fall and when they decide whether to slow down or pause."

The record also showed that the Fed staff revised up their inflation forecast. They estimated that the personal consumption expenditures price index would rise 4.3 percent in 2022 before decelerating to a 2.5 percent increase next year.

High inflation has angered Americans and hurt President Joe Biden's approval ratings, with ire also directed at the Fed. Even so, Jerome Powell was confirmed by the Senate to a second term as chair this month in an 80-19 vote.

So far, the rise in borrowing costs has yet to significantly dent consumer demand. Retail sales rose at a solid pace in April, although with the 30-year mortgage rate now above 5 percent, the pace of home sales has slowed.

—With assistance from Jordan Yadoo, Liz Capo McCormick, Jonnelle Marte & Vince Golle.