Segment Information (Summary Of Information By Business Segment) (Parenthetical) (Details) $ in Millions		3 Months Ended
	Apr. 21, 2016 USD ($) a	Jun. 30, 2016 USD ($) a
Segment Reporting Information [Line Items]
Acres sold through timberland sale | a	172,000	172,000
Land Sales	$ 114.0	$ 114.0
Real Estate [Member]
Segment Reporting Information [Line Items]
Net loss		48.5
Operating Segments [Member] | Real Estate [Member]
Segment Reporting Information [Line Items]
Net loss		$ 48.5