Property, Plant and Equipment, Net

12 Months Ended

Dec. 31, 2019

Property Plant And Equipment [Abstract]

Property, Plant and Equipment, Net

Note G: Property, Plant and Equipment, Net

December 31
(in millions)	2019			2018
Land and land improvements	$	1,135.0		$	1,089.6
Mineral reserves and interests		2,509.8			2,506.8
Buildings		163.4			162.1
Machinery and equipment		4,548.6			4,357.7
Construction in progress		258.4			178.7
Finance lease right-of-use assets		18.3			—
		8,633.5			8,294.9
Less: Accumulated depreciation, depletion and amortization		(3,427.5	)		(3,137.7	)
Total	$	5,206.0		$	5,157.2

Depreciation, depletion and amortization expense related to property, plant and equipment was $354.4 million, $326.1 million and $279.8 million for the years ended December 31, 2019, 2018 and 2017, respectively. Depreciation, depletion and amortization expense for 2019 includes amortization of right-of-use assets from finance leases and for 2018 and 2017 includes amortization of machinery and equipment under capital leases.

Interest expense of $5.1 million, $3.0 million and $3.6 million was capitalized during 2019, 2018 and 2017, respectively.

At December 31, 2019 and 2018, $49.7 million and $56.2 million, respectively, of the Building Materials business’ property, plant and equipment, net, were located in foreign countries, namely the Bahamas and Canada.