cross (one's) t's and dot (one's) i's(redirected from crossing somebody's t's and dotting somebody's i's)
cross (one's) t's and dot (one's) i's
To do something carefully and make sure that every last minor detail is completed. Make sure the legal team crosses their t's and dots their i's when drawing up the contract. I made sure to cross my t's and dot my i's when installing the circuit breaker—you can never be too careful with electrical work.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.