One of the country’s best-known media properties is heading out on its own.

Time Inc., the largest publisher of consumer magazines in the U.S., was formally spun off Monday as a stand-alone publicly traded company. And with Cravath, Swaine & Moore advising longtime client Time Warner on the historic move, which saddles Time Inc. with $1.3 billion in debt, the latter has turned to Mintz, Levin, Cohn, Ferris, Glovsky and Popeo for outside counsel on the split from its former parent.