Consolidated Statements of Shareholders' Equity - USD ($) shares in Thousands, $ in Millions	Common Stock	Treasury Stock, Common	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interest	Total
Balance at beginning of the period at Dec. 31, 2013	$ 1,079	$ (3,552)	$ 3,948	$ (249)	$ 191	$ 1,417
Balance (in shares) at Dec. 31, 2013	330,240	(188,122)
Increase (Decrease) in Stockholders' Equity
Net earnings			470		28	498
Other comprehensive earnings, net of tax				(273)		(273)
Common dividends, net of tax benefits			(71)			(71)
Treasury stock purchases		$ (397)				(397)
Treasury stock purchases (in shares)		(6,911)
Treasury shares reissued		$ 23				23
Treasury shares reissued (in shares)		381
Shares issued and stock compensation for stock options and other stock plans, net of shares exchanged	$ 35					35
Shares issued and stock compensation for stock options and other stock plans, net of shares exchanged (in shares)	1,378
Tax benefit on option exercises	$ 18					18
Dividends paid to noncontrolling interests					(12)	(12)
Other activity		$ 3			(1)	2
Balance at end of the period at Dec. 31, 2014	$ 1,132	$ (3,923)	4,347	(522)	206	1,240
Balance (in shares) at Dec. 31, 2014	331,618	(194,652)
Increase (Decrease) in Stockholders' Equity
Net earnings			281		22	303
Other comprehensive earnings, net of tax				(118)		(118)
Common dividends, net of tax benefits			(71)			(71)
Treasury stock purchases		$ (136)				(136)
Treasury stock purchases (in shares)		(1,766)
Treasury shares reissued		$ 23				23
Treasury shares reissued (in shares)		329
Shares issued and stock compensation for stock options and other stock plans, net of shares exchanged	$ 29					29
Shares issued and stock compensation for stock options and other stock plans, net of shares exchanged (in shares)	1,031
Tax benefit on option exercises	$ 21					21
Dividends paid to noncontrolling interests					(18)	(18)
Acquisition of noncontrolling interests	(220)	$ 403			(200)	(17)
Acquisition of Rexam (in shares)		5,730
Other activity		$ 5				5
Balance at end of the period at Dec. 31, 2015	$ 962	$ (3,628)	4,557	(640)	10	1,261
Balance (in shares) at Dec. 31, 2015	332,649	(190,359)
Increase (Decrease) in Stockholders' Equity
Net earnings			263		3	266
Other comprehensive earnings, net of tax				(301)	(1)	(302)
Common dividends, net of tax benefits			(81)			(81)
Treasury stock purchases		$ (107)				(107)
Treasury stock purchases (in shares)		(1,599)
Treasury shares reissued		$ 23				23
Treasury shares reissued (in shares)		320
Shares issued and stock compensation for stock options and other stock plans, net of shares exchanged	$ 54					54
Shares issued and stock compensation for stock options and other stock plans, net of shares exchanged (in shares)	1,603
Tax benefit on option exercises	$ 22					22
Acquisition of Rexam		$ 2,302			94	2,396
Acquisition of Rexam (in shares)		32,251
Other activity		$ 9				9
Balance at end of the period at Dec. 31, 2016	$ 1,038	$ (1,401)	$ 4,739	$ (941)	$ 106	$ 3,541
Balance (in shares) at Dec. 31, 2016	334,252	(159,387)