Summary of Lease information (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Leases [Abstract]
Right of use assets		$ 172.9		$ 172.9		$ 181.6
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]						us-gaap:OtherAssetsNoncurrent
Current lease liabilities		25.5		25.5		$ 25.0
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]						us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent
Long-term lease liabilities		159.2		159.2		$ 168.3
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]						us-gaap:OtherLiabilitiesNoncurrent
Total lease liabilities		$ 184.7		$ 184.7		$ 193.3
Weighted-average remaining lease term (years)		9 years 3 months 18 days		9 years 3 months 18 days		9 years 8 months 12 days
Weighted-average discount rate		4.20%		4.20%		4.30%
Lease cost	[1]	$ 8.2	$ 6.8	$ 16.5	$ 13.4
Leased assets obtained in exchange for new lease liabilities net of modifications	[2]	(0.3)	6.3	4.1	16.5
Cash paid for amounts included in the measurement of lease liabilities		$ 8.3	$ 6.4	$ 16.5	$ 12.6

[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 noncash component of lease expense for the first six months of 2021 and 2020 was $12.8 and $9.7, respectively, and is included in the Amortization caption in the condensed consolidated statement of cash flows.

[2] In June 2021, the Company determined that a renewal option was no longer likely to be exercised.  This resulted in a decrease to the Company’s right of use assets and corresponding lease liabilities of approximately $0.8 recorded in the second quarter of 2021.  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.