I know by the fundamental theorem of finitely generated abelian groups that we can write any $\mathbb{Z}$-module of the form
$$A\cong \mathbb{Z}^r\oplus Tor(A) $$
Can we not also decompose any general $\mathbb{Z}$-module to such a form of
$$ A\cong F(A)\oplus Tor(A) $$
where $F(A)$ is the free part of $A$? If not, is there any generalization to the setting of infinitely generated $\mathbb{Z}$-modules? I was not able to find any answers on this site dealing with removing the assumption of being finitely generated.