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Operating Segment Information and Concentrations of Risk (Tables) | 12 Months Ended
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Mar. 31, 2017
Segment Reporting [Abstract] |
Summary of Operating Segments | The following is the Company’s operating segment information:
|  | Net Sales to Customers Years Ended 31 March |
(Millions of US dollars) |  | 2017 |  |  | 2016 |  |  | 2015 |
North America Fiber Cement |  | $ | 1,493.4 |  |  | $ | 1,335.0 |  |  | $ | 1,224.7 |
International Fiber Cement |  |  | 411.8 |  |  |  | 379.4 |  |  |  | 418.4 |
Other Businesses |  |  | 16.4 |  |  |  | 13.8 |  |  |  | 13.8 |
Worldwide total |  | $ | 1,921.6 |  |  | $ | 1,728.2 |  |  | $ | 1,656.9 |
|  | Income Before Income Taxes Years Ended 31 March |
(Millions of US dollars) |  | 2017 |  |  | 2016 |  |  | 2015 |
North America Fiber Cement1 |  | $ | 343.9 |  |  | $ | 352.2 |  |  | $ | 290.0 |
International Fiber Cement1,6,7 |  |  | 95.1 |  |  |  | 77.9 |  |  |  | 94.5 |
Other Businesses |  |  | (6.7) |  |  |  | (8.6) |  |  |  | (4.5) |
Research and Development1 |  |  | (25.5) |  |  |  | (23.9) |  |  |  | (26.0) |
Segments total |  |  | 406.8 |  |  |  | 397.6 |  |  |  | 354.0 |
General Corporate2 |  |  | (13.6) |  |  |  | (43.6) |  |  |  | (19.0) |
Total operating income |  |  | 393.2 |  |  |  | 354.0 |  |  |  | 335.0 |
Net interest expense3 |  |  | (27.5) |  |  |  | (25.6) |  |  |  | (7.5) |
Other income (expense) |  |  | 1.3 |  |  |  | 2.1 |  |  |  | (4.9) |
Worldwide total |  | $ | 367.0 |  |  | $ | 330.5 |  |  | $ | 322.6 |
|  |  |  |  | Total Identifiable Assets 31 March |
(Millions of US dollars) |  |  |  |  | 2017 |  |  | 2016 |
North America Fiber Cement |  |  |  |  |  | $ | 917.4 |  |  | $ | 889.7 |
International Fiber Cement |  |  |  |  |  |  | 335.7 |  |  |  | 324.0 |
Other Businesses |  |  |  |  |  |  | 28.4 |  |  |  | 27.7 |
Research and Development |  |  |  |  |  |  | 12.3 |  |  |  | 13.6 |
Segments total |  |  |  |  |  |  | 1,293.8 |  |  |  | 1,255.0 |
General Corporate 4,5 |  |  |  |  |  |  | 718.9 |  |  |  | 774.4 |
Worldwide total |  |  |  |  |  | $ | 2,012.7 |  |  | $ | 2,029.4 |
Summary of Geographical Information | The following is the Company’s geographical information:
|  | Net Sales to Customers Years Ended 31 March |
(Millions of US dollars) |  |  | 2017 |  |  |  | 2016 |  |  |  | 2015 |
North America |  | $ | 1,509.9 |  |  | $ | 1,348.8 |  |  | $ | 1,238.5 |
Australia |  |  | 252.5 |  |  |  | 228.4 |  |  |  | 267.7 |
New Zealand |  |  | 73.3 |  |  |  | 61.4 |  |  |  | 64.7 |
Other Countries |  |  | 85.9 |  |  |  | 89.6 |  |  |  | 86.0 |
Worldwide total |  | $ | 1,921.6 |  |  | $ | 1,728.2 |  |  | $ | 1,656.9 |
|  |  |  |  | Total Identifiable Assets 31 March |
(Millions of US dollars) |  |  |  |  |  |  | 2017 |  |  |  | 2016 |
North America |  |  |  |  |  | $ | 953.1 |  |  | $ | 925.1 |
Australia |  |  |  |  |  |  | 237.0 |  |  |  | 232.4 |
New Zealand |  |  |  |  |  |  | 31.8 |  |  |  | 26.5 |
Other Countries |  |  |  |  |  |  | 71.9 |  |  |  | 71.0 |
Segments total |  |  |  |  |  |  | 1,293.8 |  |  |  | 1,255.0 |
General Corporate4,5 |  |  |  |  |  |  | 718.9 |  |  |  | 774.4 |
Worldwide total |  |  |  |  |  | $ | 2,012.7 |  |  | $ | 2,029.4 |
1 | Research and development expenditures are expensed as incurred and are summarized by segment in the following table:
|  | Years Ended 31 March |
(Millions of US dollars) |  | 2017 |  |  | 2016 |  |  | 2015 |
North America Fiber Cement |  | $ | 6.2 |  |  | $ | 6.6 |  |  | $ | 6.1 |
International Fiber Cement |  |  | 1.5 |  |  |  | 1.2 |  |  |  | 1.4 |
Research and Developmenta |  |  | 22.6 |  |  |  | 21.7 |  |  |  | 24.2 |
|  | $ | 30.3 |  |  | $ | 29.5 |  |  | $ | 31.7 |
| a The Research and Development segment also included selling, general and administrative expenses of US$2.9 million, US$2.2 million and US$1.8 million in fiscal years 2017, 2016 and 2015, respectively.
2 | The principal components of General Corporate costs are officer and employee compensation and related benefits, professional and legal fees, administrative costs, and rental expense on the Company’s corporate offices. Also included in General Corporate costs are the following:
|  | Years Ended 31 March |
(Millions of US dollars) |  | 2017 |  |  | 2016 |  |  | 2015 |
Asbestos adjustments |  | $ | 40.4 |  |  | $ | 5.5 |  |  | $ | 33.4 |
AICF SG&A expenses |  | $ | (1.5 | ) |  | $ | (1.7 | ) |  | $ | (2.5 | )
3 | The Company does not report net interest expense for each operating segment as operating segments are not held directly accountable for interest expense. Included in net interest expense is net AICF interest expense (income) of US$1.1 million, US$0.3 million and US$(1.4) million in fiscal years 2017, 2016 and 2015, respectively.
4 | The Company does not report deferred tax assets and liabilities for each operating segment as operating segments are not held directly accountable for deferred income taxes. All deferred income taxes are included in General Corporate costs.
5 | Asbestos-related assets at 31 March 2017 and 2016 are US$573.8 million and US$619.8 million, respectively, and are included in the General Corporate costs.
6 | Included in the International Fiber Cement segment for the year ended 31 March 2016 was a gain on the sale of the Australian Pipes business of US$1.7 million.
7 | Included in the International Fiber Cement segment are adjustments to the provision for New Zealand weathertightness claims.
|  | Years Ended 31 March |
(Millions of US dollars) |  | 2017 |  |  | 2016 |  |  | 2015 |
New Zealand weathertightness claims (expense)/ benefit |  | $ | - |  |  | $ | (0.5) |  |  | $ | 4.3 |
Summary of Gross Sales by Major Customers | The following is gross sales generated by this customer, which is from the North America Fiber Cement segment:
|  | Years Ended 31 March |
(Millions of US dollars) |  | 2017 |  |  |  |  |  | 2016 |  |  |  |  |  | 2015 |  |  |  |
|  |  |  |  |  |  | % |  |  |  |  |  |  |  | % |  |  |  |  |  |  |  | % |
Customer A |  | $ | 226.0 |  |  |  | 10.3 | % |  | $ | 197.0 |  |  |  | 10.1 | % |  | $ | 177.4 |  |  |  | 10.7 | %

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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8813-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8721-108599 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8736-108599 + Details
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