Leases And Other Commitments - Maturity of Lease Liabilities (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Operating Leases
2020	$ 17.4
2021	17.4
2022	14.6
2023	14.3
2024	12.5
Thereafter	23.9
Total future lease cost	100.1
Less: Amount representing interest	(14.3)
Present value of future payments	85.8
Less: Short-term leases not recorded as a liability	0.2
Revised present value of future lease payments	86.0	$ 40.4
Less: Current portion	(13.6)		$ 0.0
Long-term portion	72.4		$ 0.0
Finance Leases
2020	1.3
2021	1.3
2022	1.4
2023	1.4
2024	1.5
Thereafter	13.9
Total future lease cost	20.8
Less: Amount representing interest	(5.8)
Present value of future payments	15.0
Less: Short-term leases not recorded as a liability	0.0
Revised present value of future lease payments	15.0	$ 15.9
Less: Current portion	(0.6)
Long-term portion	14.4
Minimum lease payments for leases not yet commenced	$ 5.5

Finance Lease, Short Term Leases, Payments Due

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Present value of lessee's discounted obligation for lease payments from finance lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980

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-Publisher FASB
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-Topic 842
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-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977

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