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Income Taxes, Reconciliation of Statutory to Effective Tax Rate (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Effective income tax rate, continuing operations, tax rate reconciliation [Abstract]
Income taxes at statutory rate	21.00%	35.00%	35.00%
Indefinite reinvestment	(2.73%)	2.75%	(1.98%)
Excess tax benefit from equity award	(1.41%)	(2.38%)	0.00%
Non-U.S. income taxed at different rates	7.37%	0.00%	0.00%
Foreign withholding taxes	7.68%	0.00%	0.00%
Change in reserve for uncertain tax positions	3.68%	0.00%	0.00%
Non-deductible expenses	0.00%	0.17%	0.11%
Controlled foreign corporation losses	0.00%	(0.13%)	(2.63%)
Valuation allowance recognized foreign tax credit & others	5.54%	19.59%	0.00%
Write-off outside basis DTL	0.00%	(2.89%)	0.00%
Revaluation of deferred taxes	1.61%	(1.28%)	0.00%
Section 987 implementation	0.00%	0.00%	2.69%
Other	1.77%	0.43%	(0.42%)
Effective income tax rate, continuing operations	44.51%	51.26%	32.77%
Cumulative amount of undistributed earnings of non-U.S. subsidiaries	$ 60.0
Incremental taxes if undistributed earnings on non-U.S. subsidiaries were repatriated	$ 6.0

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to controlled foreign corporation losses.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to indefinitely invested earnings of non-U.S. subsidiaries.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the statutory income tax rates to pretax income (loss) from continuing operations attributable to the write-off of the net outside tax basis deferred tax liabilities due to the modified territorial system that has been implemented in the U.S.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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