Goodwill And Intangible Assets (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Goodwill [Line Items]
Goodwill, Impairment Loss	$ 1,383.0
Amortization	182.6	$ 244.5	$ 17.5
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Amortization expense, next 12 months	126.4
Amortization expense, year two	121.2
Amortization expense, year three	116.5
Amortization expense, year four	112.4
Amortization expense, year five	107.5
Amortization expense, Thereafter	$ 592.7
Minimum
Goodwill [Line Items]
Reporting unit, percentage of fair value in excess of carrying amount	56.00%
Maximum
Goodwill [Line Items]
Reporting unit, percentage of fair value in excess of carrying amount	200.00%
Subsea
Goodwill [Line Items]
Goodwill, Impairment Loss	$ (1,383.0)