Commitments, Guarantees, Indemnifications, and Legal Proceedings - Schedule of Future Minimum Payments Under Capitalized Leases (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Capital Leases Future Minimum Payments Due [Abstract]
2019	$ 2.7
2020	2.7
2021	2.7
2022	2.7
2023	2.7
Thereafter	12.4
Total minimum capital lease payments	25.9
Less amounts representing interest	(6.9)
Present value of net minimum capital lease payments	19.0
Less current maturities of capital lease obligations	(1.4)	$ (1.3)
Total long-term capital lease obligations	$ 17.6	$ 19.0

Amount of capital lease obligation due within one year or the normal operating cycle, if longer.

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-Name Accounting Standards Codification
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-SubTopic 10
-Section S99
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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid more than one year (or one operating cycle, if longer) after the balance sheet date.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 840
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Amount of minimum lease payments for capital leases.

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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.

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Amount of minimum lease payments for capital leases due in the fifth 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.

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Amount of minimum lease payments for capital leases due in the fourth 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.

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Amount of minimum lease payments for capital leases due in the third 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.

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Amount of minimum lease payments for capital leases due after the fifth 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.

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Amount necessary to reduce net minimum lease payments to present value for capital leases.

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Present value of minimum lease payments for capital leases net of executory costs, including amounts paid by the lessee to the lessor for insurance, maintenance and taxes.

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