The adjustment to reduce the value of existing agreements that specify the lessee's rights to use the leased property. This expense is charged when the estimates of future profits generated by the leased property are reduced.

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Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

+ References

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Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.

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Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

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Amount of lessee's right to use underlying asset under operating lease.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Lessee, Operating Lease, Remaining Lease Terms

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Leases Lease Narrative (Details) - USD ($) $ in Millions	12 Months Ended
Leases Lease Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating Leased Assets [Line Items]
Operating Lease, Right-of-Use Asset	$ 58.1	$ 0.0
Cash paid for lease liabilities	29.9
Impairment of Leasehold	5.6
Operating Lease, Liability, Current	21.1	0.0
Operating Lease, Liability, Noncurrent	$ 51.8	0.0
Operating Leases, Rent Expense		$ 40.1	$ 37.0
Minimum
Operating Leased Assets [Line Items]
Remaining lease terms	1 year
Maximum
Operating Leased Assets [Line Items]
Remaining lease terms	10 years
Rowan Companies [Member]
Operating Leased Assets [Line Items]
Operating Lease, Right-of-Use Asset	$ 12.2
Operating Lease, Liability, Current	3.9
Operating Lease, Liability, Noncurrent	$ 10.6