The Clippers got off to a slow start, trailing by as many as 14 points in the first quarter but scored 109 points in the final three periods. They shot 59.6% from the floor and 48.3% on three-pointers.
Westbrook had 23 points and nine assists and Paul George scored 18 points for the Clippers, who have won seven of eight.
Go beyond the scoreboard
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Jalen Ivey had 28 points and Bojan Bogdanovic added 26 for Detroit, which is 4-41 after a 2-1 start. Marcus Sasser added 21 points.
The Clippers led 65-59 at the half and their scoring pace didn’t let up in the third. Leonard reached 30 points with five minutes left in the quarter when he put the Clippers ahead 89-80.
Detroit answered with an 8-0 run before Westbrook hit a three-pointer. Norman Powell’s last-second 3-pointer gave the Clippers a 101-90 lead going into the fourth.
Powell started the fourth with another three, and the Clippers led 108-90 after the first minute of the fourth. Detroit got within 116-109, but the Clippers scored nine points in 74 seconds to ice the game.
Up next for the Clippers: at the Miami Heat on Sunday.