CONSOLIDATED STATEMENT OF CHANGES IN EQUITY - USD ($) $ in Millions	Total	Mandatory convertible preference shares, series A:	Common shares:	Other capital:	Retained earnings:	Accumulated other comprehensive loss:	Total equity:	Plum Creek Common shares:	Plum Creek Other capital:
Balance at beginning of year at Dec. 31, 2015		$ 14	$ 638	$ 4,080	$ 1,349	$ (1,212)
Conversion to common shares (Note 16)		(14)
Preference shares converted to common shares (Note 16)			29
Issued for exercise of stock options			3	61
Repurchase of common shares (Note 16)	$ (2,000)		(85)	(1,918)
Release of vested restricted stock units			2
Share-based compensation				35
Plum Creek acquisition								$ 349	$ 6,046
Other transactions, net				(22)
Net earnings	1,027				1,027
Dividends on common shares					(933)
Adjustments related to new accounting pronouncements (Note 1)	0				0
Cash dividends on preference shares					(22)
Foreign currency translation adjustments	25					25
Changes in unamortized actuarial loss, net of tax (Note 10)	(269)					(269)
Changes in unamortized net prior service credit, net of tax (Note 10)	$ (4)					(4)
Unrealized gains on available-for-sale securities						1
Balance at end of year at Dec. 31, 2016		0	936	8,282	1,421	(1,459)	$ 9,180
Dividends paid per common share	$ 1.24
Conversion to common shares (Note 16)		0
Preference shares converted to common shares (Note 16)			0
Issued for exercise of stock options			7	128
Repurchase of common shares (Note 16)			0	0
Release of vested restricted stock units			1
Share-based compensation				35
Plum Creek acquisition								0	0
Other transactions, net				(6)
Net earnings	$ 582				582
Dividends on common shares					(944)
Adjustments related to new accounting pronouncements (Note 1)	0				19
Cash dividends on preference shares					0
Foreign currency translation adjustments	32					32
Changes in unamortized actuarial loss, net of tax (Note 10)	(132)					(132)
Changes in unamortized net prior service credit, net of tax (Note 10)	(5)					(5)
Unrealized gains on available-for-sale securities						2
Balance at end of year at Dec. 31, 2017	$ 8,899	0	944	8,439	1,078	(1,562)	8,899
Dividends paid per common share	$ 1.25
Conversion to common shares (Note 16)		0
Preference shares converted to common shares (Note 16)			0
Issued for exercise of stock options			3	49
Repurchase of common shares (Note 16)	$ 0		(15)	(351)
Release of vested restricted stock units			1
Share-based compensation				42
Plum Creek acquisition								$ 0	$ 0
Other transactions, net				(7)
Net earnings	748				748
Dividends on common shares					(995)
Adjustments related to new accounting pronouncements (Note 1)					262	(262)
Cash dividends on preference shares					0
Foreign currency translation adjustments	(54)					(54)
Changes in unamortized actuarial loss, net of tax (Note 10)	733					733
Changes in unamortized net prior service credit, net of tax (Note 10)	(7)					(7)
Unrealized gains on available-for-sale securities						0
Balance at end of year at Dec. 31, 2018	$ 9,046	$ 0	$ 933	$ 8,172	$ 1,093	$ (1,152)	$ 9,046
Dividends paid per common share	$ 1.32