Last I checked there were nine justices. Who abstained?
Ah, from the Fine Article:
Justice Elena Kagan did not take part in the case, presumably because she worked on it at an earlier stage while serving in the Justice Department.
And you have two guesses which two justices dissented. Hint: Neither of them were male (although that does not mean they're not masculine.)
Didn't stop her from opining on DeathCare.