Insurance Recoveries (Schedule Of Net Impact In Current Earnings) (Details) - 9 months ended Sep. 30, 2017 NZD in Thousands, $ in Thousands		NZD	USD ($)
Insurance Recoveries [Line Items]
Insurance Proceed Allocation		NZD 36,034
Recorded as of December 31, 2016		20,727
Changes in estimates and others		458
Total recorded values of recoverable components		21,185
Net Impact in Current Earnings		14,849	$ 10,740
Gain on insurance recoveries		12,700	9,217
Non-Operating Income [Member]
Insurance Recoveries [Line Items]
Insurance Proceed Allocation		33,817
Recorded as of December 31, 2016		20,727
Changes in estimates and others		347
Total recorded values of recoverable components		21,074
Net Impact in Current Earnings		12,743	9,217
Property Damage [Member]
Insurance Recoveries [Line Items]
Insurance Proceed Allocation		29,093
Property Damage [Member] | Non-Operating Income [Member]
Insurance Recoveries [Line Items]
Insurance Proceed Allocation	[1]	29,093
Recorded as of December 31, 2016	[1]	13,451
Changes in estimates and others	[1]	347
Total recorded values of recoverable components	[1]	13,798
Net Impact in Current Earnings	[1]	15,295	11,063
Demolition Costs [Member]
Insurance Recoveries [Line Items]
Insurance Proceed Allocation		4,724
Demolition Costs [Member] | Non-Operating Income [Member]
Insurance Recoveries [Line Items]
Insurance Proceed Allocation	[1]	4,724
Recorded as of December 31, 2016	[1]	7,276
Total recorded values of recoverable components	[1]	7,276
Net Impact in Current Earnings	[1]	(2,552)	(1,846)
Business Interruption [Member]
Insurance Recoveries [Line Items]
Insurance Proceed Allocation		2,217
Business Interruption [Member] | Operating Income [Member]
Insurance Recoveries [Line Items]
Insurance Proceed Allocation	[2]	2,217
Changes in estimates and others	[2]	111
Total recorded values of recoverable components	[2]	111
Net Impact in Current Earnings	[2]	NZD 2,106	$ 1,523

[1] The net impact to current earnings of $9.2 million (NZ$12.7 million) is recorded as "Gain on Insurance Recoveries" in our Consolidated Statement of Income.

[2] The impact to current earnings of $1.5 million (NZ$2.1 million) is recorded as part of the applicable segment revenues in our Consolidated Statement of Income.