Leases and commitments - Maturities of Lease Liabilities, Topic 840 (Details) $ in Millions	Dec. 31, 2018 USD ($)
Finance Leases
2019	$ 1.6
2020	1.6
2021	1.6
2022	1.0
2023	0.0
Thereafter	0.0
Total	5.8
Operating Leases
2019	48.5
2020	42.1
2021	30.0
2022	20.8
2023	14.3
Thereafter	24.4
Total	180.1
Minimum sublease rentals due in the future under noncancelable operating leases	$ 2.7

Amount of minimum lease payments for capital leases due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84164817&loc=d3e45280-112737