Business Combinations and Discontinued Operations - Summary of Assets and Liabilities Held for Sale (Detail) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Inventories, net	$ 50.7	$ 53.1
Investment land	40.7	32.7
Other assets	29.8	16.4
Total current assets held for sale	121.2	102.2
Property, plant and equipment	292.5	226.0
Intangible assets, excluding goodwill	270.6	264.9
Operating lease right-of-use assets	26.3	18.1
Goodwill	220.6	109.3
Other assets	8.9	4.6
Valuation allowance for loss on sale	(6.0)	(6.0)
Total noncurrent assets held for sale	812.9	616.9
Lease obligations	(9.3)	(7.5)
Total current liabilities held for sale	(9.3)	(7.5)
Asset retirement obligations	(33.4)	(31.5)
Lease obligations	(30.0)	(22.0)
Other liabilities	(0.5)
Total noncurrent liabilities held for sale	(63.9)	(53.5)
Continuing Operations
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Inventories, net	8.9
Investment land	40.7	32.7
Other assets	0.5
Total current assets held for sale	50.1	32.7
Property, plant and equipment	65.6
Intangible assets, excluding goodwill	5.7
Operating lease right-of-use assets	7.4
Goodwill	115.9
Total noncurrent assets held for sale	194.6
Lease obligations	(1.0)
Total current liabilities held for sale	(1.0)
Asset retirement obligations	(0.7)
Lease obligations	(6.8)
Total noncurrent liabilities held for sale	(7.5)
Discontinued Operations
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Inventories, net	41.8	53.1
Other assets	29.3	16.4
Total current assets held for sale	71.1	69.5
Property, plant and equipment	226.9	226.0
Intangible assets, excluding goodwill	264.9	264.9
Operating lease right-of-use assets	18.9	18.1
Goodwill	104.7	109.3
Other assets	8.9	4.6
Valuation allowance for loss on sale	(6.0)	(6.0)
Total noncurrent assets held for sale	618.3	616.9
Lease obligations	(8.3)	(7.5)
Total current liabilities held for sale	(8.3)	(7.5)
Asset retirement obligations	(32.7)	(31.5)
Lease obligations	(23.2)	(22.0)
Other liabilities	(0.5)
Total noncurrent liabilities held for sale	$ (56.4)	$ (53.5)