Leases (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2019	Dec. 31, 2018
Operating lease assets	$ 447.8	$ 0.0
Long-term operating lease liabilities	436.1	0.0
Operating lease liabilities	508.6
Operating lease cost	15.7
Net lease cost	15.7
ASC 842 - Minimum lease payments 2019 (remaining nine months)	69.4
ASC 842 - Minimum lease payments, 2020	81.7
ASC 842 - Minimum lease payments, 2021	76.0
ASC 842 - Minimum lease payments, 2022	69.2
ASC 842 - Minimum lease payments, 2023	68.6
ASC 842 - Minimum lease payments, 2024	66.1
ASC 842 - Minimum lease payments, thereafter	146.2
ASC 842 - Minimum lease payments	577.2
Less: Interest	$ 68.6
ASC 840 - Minimum lease payments, 2019 (remaining 9 months)		87.0
ASC 840 - Minimum lease payments, 2020		80.7
ASC 840 - Minimum lease payments, 2021		75.9
ASC 840 - Minimum lease payments, 2022		71.7
ASC 940 - Minimum lease payments, 2023		71.0
ASC 840 - Minimum lease payments, thereafter		215.3
ASC 840 - Minimum lease payments total		601.6
ASC 840 - Sublease income, 2019 (remaining 9 months)		26.8
ASC 840 - Sublease income, 2020		25.6
ASC 840 - Sublease income, 2021		23.7
ASC 840 - Sublease income, 2022		24.0
ASC 840 - Sublease income, 2023		24.3
ASC 840 - Sublease income, thereafter		58.4
ASC 840 - Sublease income total		182.8
ASC 840 - Net minimum lease payments 2019 (remaining 9 months)		60.2
ASC 840 - Net minimum lease payments, 2020		55.1
ASC 840 - Net minimum lease payments, 2021		52.2
ASC 840 - Net minimum lease payments, 2022		47.7
ASC 840 - Net minimum lease payments, 2023		46.7
ASC 840 - Net minimum lease payments, thereafter		156.9
ASC 840 - Net minimum lease payments total		$ 418.8
Weighted average remaining lease term in years	7 years 10 months 18 days
Weighted average discount rate	3.33%
Cash paid for amounts included in measurement of lease liabilities	$ 19.4
Operating lease assets obtained in exchange for lease obligations	5.4
Research and development
Operating lease cost	0.3
Net lease cost	0.3
Selling, general and administrative
Operating lease cost	23.5
Sublease income	(7.1)
Net lease cost	23.5
Other income (expense)
Sublease income	(1.0)
Operating lease assets
Operating lease assets	447.8
Accrued expenses and other
Operating lease liability, current	72.5
Long-term operating lease liabilities
Long-term operating lease liabilities	$ 436.1

Net minimum lease payments total.

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