He gave away a Jeep Grand Cherokee that retailed for $26,000. He forgave a personal loan worth at least $500,000. He poured at least half a million dollars into a trust fund for his ex-wife. And he cast off a set of unwanted cabinets valued at more than $40,000.

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    Michael Bloomberg

Even by the stratospheric standards of Michael R. Bloomberg, 2010 represented a year of pronounced consumption and charity, according to tax documents and disclosure reports that were revealed in a heavily edited form on Friday.

Mayor Bloomberg, whose fortune is estimated at about $18 billion, has never exactly slummed it — not in the last few decades, anyway: he owns seven homes, a fleet of private planes and a stable of thoroughbred horses (not to mention an exceedingly profitable media company that bears his name).

But the documents suggested that as the stock market rebounded from recessionary lows last year, so did the mayor’s personal spending.

Mr. Bloomberg, who has long subsidized the lifestyle of his family members, children and ex-flames, set up three new trusts for those close to him, not including the fund for Susan Bloomberg, whom he divorced in 1993. (Aides refused to identify the recipients.)

And, in a sign of flush times, he ratcheted up the amount he pays for his household staff. The documents show that his Social Security taxes on those wages totaled at least $100,000 last year, up from at least $60,000 in 2009.

Mr. Bloomberg, 69, paid at least $1.5 million in city, state and federal taxes, the documents show, a figure all but certain to be a fraction of his entire bill.

As in past years, however, just how much he paid — and earned — is unknowable because his staff discloses a redacted version of his tax forms, which were shared with reporters for about two-and-a-half hours at the offices of the mayor’s accountant in Midtown Manhattan. (Reporters were barred from taking copies with them.)

The documents display his income and losses not as dollar amounts, but as a dollar range represented by letters: A ($1,000 to $5,000) to G ($500,000 to the moon).

Stu Loeser, a spokesman for the mayor, said Mr. Bloomberg refused to release his unedited tax documents because he feared disclosing sensitive corporate information to his competitors, though he did not elaborate on what those secrets might be. The president and vice president of the United States, by contrast, release a full, unexpurgated tax return to the news media every year.

Once decoded, the alphabet soup of data showed that Mr. Bloomberg earned, at the very least, about $4 million from investments in 2010.

As always, his tax returns were filled with tantalizing glimpses into the world of a multibillionaire. They reveal that horses he owns won four equestrian competitions, earning up to $98,000 in prize money, and that the mayor has found novel ways to profit from his daughter Georgina’s career as a horse show jumper. Three of Ms. Bloomberg’s fellow riders spent at least $7,000 renting space at the mayor’s various estates, and an unnamed individual paid between $5,000 and $44,000 to lease a horse that he owns.

Mr. Bloomberg earned a small tax deduction for donating a 1996 Grand Cherokee to the Red Cross. He had bought the car for his older daughter, Emma, as a high school graduation present, and the family had held on to it for 14 years, logging 95,728 miles and “driving the car into the ground,” Mr. Loeser said.

The mayor told his alma mater, Johns Hopkins University, that it did not need to repay a large personal loan from him, effectively turning it into a donation, according to the documents.

But perhaps the mayor’s most intriguing charitable gift was the set of cabinets — a lacquered unit that was bought for the headquarters of his charitable foundation, on the Upper East Side.

According to a person who had been briefed on the matter, the cabinets had already been purchased and installed inside the foundation, at 78th Street and Madison Avenue, when a case of buyer’s remorse (or clashing color schemes) set in.

Aides to Mr. Bloomberg removed the cabinets, which had cost at least $44,000, and donated them to a charity that works with formerly homeless New Yorkers.