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Quarterly report pursuant to Section 13 or 15(d)

SUPPLEMENTARY FINANCIAL STATEMENT INFORMATION - Deferred Revenue (Details)

v3.20.2
SUPPLEMENTARY FINANCIAL STATEMENT INFORMATION - Deferred Revenue (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] Ìý Ìý Ìý Ìý
Realization of deferred revenue $ 0.0 $ 0.0 $ 34.6 $ 0.0
Other Current Liabilities [Member] Ìý Ìý Ìý Ìý
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] Ìý Ìý Ìý Ìý
Opening balance as of January 1 Ìý Ìý 22.1 21.0
Contract With Customer, Liability, Period Increase (Decrease) Ìý Ìý (17.2) (5.5)
Closing balance as of June 30 4.9 15.5 4.9 15.5
Other Noncurrent Liabilities [Member] Ìý Ìý Ìý Ìý
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] Ìý Ìý Ìý Ìý
Opening balance as of January 1 Ìý Ìý 25.7 38.5
Contract With Customer, Liability, Period Increase (Decrease) Ìý Ìý (25.7) (4.2)
Closing balance as of June 30 $ 0.0 $ 34.3 $ 0.0 $ 34.3