  The IceCube Neutrino Observatory at the South Pole is a multi-component
detector capable of measuring the cosmic ray energy spectrum and composition
from PeV to EeV, the energy region typically thought to cover the transition
from galactic to extragalactic sources of cosmic rays. The IceTop array at the
surface is sensitive to the electromagnetic part of the air shower while the
deep in-ice array detects the high-energy (TeV) muonic component of air
showers. IceTop's reconstructed shower size parameter, S$_{125}$, is unfolded
into a high statistics all-particle energy spectrum. Furthermore, for air
showers that pass through both arrays, the in-ice reconstructed muon energy
loss information is combined with S$_{125}$ in a machine learning algorithm to
simultaneously extract both the all-particle energy spectrum and individual
spectra for elemental groups. The all-particle spectra as well as spectra for
individual elemental groups are presented.

High Energy Astrophysical Phenomena