Property, plant & equipment

Property, plant and equipment is the largest non-current asset on the balance sheet for most capital intensive businesses. It represents the tangible long-lived assets a company uses to operate and generate revenue, including land, buildings, factories, machinery, vehicles, technology infrastructure, and leasehold improvements.

It's recorded at historical cost and then reduced over time by accumulated depreciation, so the balance sheet figure reflects the remaining book value of the asset base rather than what those assets would cost to replace or what they could be sold for today. Land is the one exception, since it isn't depreciated on the basis that it doesn't wear out or become obsolete.

The gap between gross PP&E and net PP&E, accumulated depreciation divided by gross PP&E, gives a rough sense of how aged the asset base is: a high ratio signals existing assets are well into their useful lives and will likely need capital expenditure to maintain or replace, while a low ratio suggests a relatively young, recently invested asset base. The relationship between capital expenditure and depreciation is one of the most watched signals in capital intensive industries, since capex consistently below depreciation suggests a company is harvesting its asset base rather than maintaining it, flattering free cash flow in the short term but eroding productive capacity over time.

Following the introduction of new lease accounting rules under both US GAAP and IFRS, operating leases are now capitalised on the balance sheet as right-of-use assets and presented within or alongside PP&E. This meaningfully inflated the asset base of businesses that rely heavily on leased real estate, aircraft, or equipment relative to how they appeared under the old lease accounting standards.