Summary of Lease information (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Leases [Abstract]
Right of use assets		$ 166.7		$ 166.7		$ 181.6
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]						us-gaap:OtherAssets
Current lease liabilities		24.9		24.9		$ 25.0
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]						Accounts Payable And Accrued Liabilities Current
Long-term lease liabilities		153.5		153.5		$ 168.3
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]						Other Liabilities Noncurrent
Total lease liabilities		$ 178.4		$ 178.4		$ 193.3
Weighted-average remaining lease term (years)		9 years 2 months 12 days		9 years 2 months 12 days		9 years 8 months 12 days
Weighted-average discount rate		4.30%		4.30%		4.30%
Lease cost	[1]	$ 8.1	$ 6.6	$ 24.6	$ 20.0
Leased assets obtained in exchange for new lease liabilities net of modifications	[2]	0.4	2.2	4.5	18.7
Cash paid for amounts included in the measurement of lease liabilities		$ 8.0	$ 6.3	$ 24.5	$ 18.9

[1] Lease expense is included in cost of sales or SG&A expenses based on the nature of the leased item.  Short-term lease expense is excluded from this amount and is not material.  The Company also has certain variable leases which are not material.  The non-cash component of lease expense for the first nine months of 2021 and 2020 was $19.1 and $14.4, respectively, and is included in the Amortization caption in the condensed consolidated statement of cash flows.

[2] In March 2020, the Company approved a capital project to purchase additional machinery and equipment at one of its leased manufacturing facilities. This led to a lease modification to include a renewal option that would extend the lease for an additional five years through 2029.  The modification resulted in an increase to the Company’s right of use assets and corresponding lease liabilities of approximately $7.3 recorded in the first quarter of 2020.