Details of Selected Balance Sheet Accounts - Narrative (Details) - USD ($) $ in Millions |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
Details of Selected Balance Sheet Accounts [Abstract] | |||
Increase (decrease) in contract with customer, asset | $ (20.0) | ||
Increases due to revenue recognized during the period | 17.7 | ||
Contract with customer, asset, reclassified to receivable | 38.0 | ||
Increase (decrease) in contract with customer, liability | (4.1) | ||
Contract with customer, liability, revenue recognized | 11.1 | ||
Increases due to billings, excluding amounts recognized as revenue during the period | 7.4 | ||
Segment Reporting Information [Line Items] | |||
Depreciation | 97.2 | $ 99.0 | $ 110.5 |
Offshore/Manufactured Products [Member] | |||
Segment Reporting Information [Line Items] | |||
Gain on insurance settlement | $ 3.8 |