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Income Taxes (Narrative) (Details) - USD ($) | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 31, 2018 | Jun. 30, 2018 | Dec. 31, 2017
Income Tax Disclosure [Line Items] |  |  |
U.S. statutory rate |  | 21.00% | 35.00%
Operating loss carryforwards |  | $ 0 | $ 0
Valuation allowance |  | 228,200,000 |
Repatriation tax payable |  | $ 36,000,000 |
Decrease in income tax expense | $ 156,000,000 |  |
Repatriation tax payment period |  | 8 years |
United States [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Earliest year remaining open for audit and/or settlement in major taxing jurisdictions |  | 2014 |
Canada [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Earliest year remaining open for audit and/or settlement in major taxing jurisdictions |  | 2012 |
Malaysia [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Earliest year remaining open for audit and/or settlement in major taxing jurisdictions |  | 2011 |
United Kingdom [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Earliest year remaining open for audit and/or settlement in major taxing jurisdictions |  | 2016 |
Scenario, Adjustment [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Deferred tax liabilities | $ (36,000,000) |  |

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- Definition Amount of deferred tax liability attributable to taxable temporary differences. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(15)(b)(2)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(15)(2)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(26)(a)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(26)(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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