Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Millions	Total	Common Stock	Paid-in Capital	Accumulated Earnings	Accumulated Other Comprehensive Loss	Treasury Stock	Total Crown Equity	Noncontrolling Interests
Cumulative effect of change in accounting principles	$ 10			$ 6	$ 3		$ 9	$ 1
Balance at beginning of period at Dec. 31, 2017	923	$ 929	$ 167	3,004	(3,241)	$ (258)	601	322
Net income attributable to Crown Holdings				90			90
Net income attributable to noncontrolling interests								23
Net income	113
Other comprehensive income	61				60		60	1
Stock-based compensation	6		6				6
Common stock repurchased	(1)		(1)				(1)
Balance at end of period at Mar. 31, 2018	1,112	929	172	3,100	(3,178)	(258)	765	347
Balance at beginning of period at Dec. 31, 2017	923	929	167	3,004	(3,241)	(258)	601	322
Net income attributable to Crown Holdings	386
Net income attributable to noncontrolling interests	67
Net income	453
Other comprehensive income	(72)
Balance at end of period at Sep. 30, 2018	1,310	929	176	3,396	(3,307)	(253)	941	369
Balance at beginning of period at Mar. 31, 2018	1,112	929	172	3,100	(3,178)	(258)	765	347
Net income attributable to Crown Holdings				132			132
Net income attributable to noncontrolling interests								15
Net income	147
Other comprehensive income	(119)				(116)		(116)	(3)
Dividends paid to noncontrolling interests	(6)						0	(6)
Restricted stock awarded	0		(5)			5	0
Stock-based compensation	5		5				5
Common stock issued	1		1				1
Common stock repurchased	(3)		(3)				(3)
Balance at end of period at Jun. 30, 2018	1,137	929	170	3,232	(3,294)	(253)	784	353
Net income attributable to Crown Holdings	164			164			164
Net income attributable to noncontrolling interests	29							29
Net income	193
Other comprehensive income	(14)				(13)		(13)	(1)
Dividends paid to noncontrolling interests	(12)							(12)
Stock-based compensation	6		6				6
Balance at end of period at Sep. 30, 2018	1,310	929	176	3,396	(3,307)	(253)	941	369
Balance at beginning of period at Dec. 31, 2018	1,286	929	186	3,449	(3,374)	(253)	937	349
Net income attributable to Crown Holdings				103			103
Net income attributable to noncontrolling interests								28
Net income	131
Other comprehensive income	85				85		85
Dividends paid to noncontrolling interests	(9)							(9)
Restricted stock awarded	0		(1)			1
Stock-based compensation	8		8				8
Common stock issued	2		2				2
Common stock repurchased	(1)		(1)				(1)
Balance at end of period at Mar. 31, 2019	1,502	929	194	3,552	(3,289)	(252)	1,134	368
Balance at beginning of period at Dec. 31, 2018	1,286	929	186	3,449	(3,374)	(253)	937	349
Net income attributable to Crown Holdings	423
Net income attributable to noncontrolling interests	86
Net income	509
Other comprehensive income	232
Balance at end of period at Sep. 30, 2019	2,021	929	209	3,872	(3,140)	(251)	1,619	402
Balance at beginning of period at Mar. 31, 2019	1,502	929	194	3,552	(3,289)	(252)	1,134	368
Net income attributable to Crown Holdings				137			137
Net income attributable to noncontrolling interests								37
Net income	174
Other comprehensive income	15				15		15
Dividends paid to noncontrolling interests	(2)							(2)
Noncontrolling Interest, Increase from Subsidiary Equity Issuance	3							3
Stock-based compensation	8		8				8
Common stock issued	1		1				1
Common stock repurchased	(1)		(1)				(1)
Balance at end of period at Jun. 30, 2019	1,700	929	202	3,689	(3,274)	(252)	1,294	406
Net income attributable to Crown Holdings	183			183			183
Net income attributable to noncontrolling interests	21							21
Net income	204
Other comprehensive income	132				134		134	(2)
Dividends paid to noncontrolling interests	(25)							(25)
Noncontrolling Interest, Increase from Subsidiary Equity Issuance	2							2
Restricted stock awarded			(1)			1
Stock-based compensation	7		7				7
Common stock issued	1		1				1
Balance at end of period at Sep. 30, 2019	$ 2,021	$ 929	$ 209	$ 3,872	$ (3,140)	$ (251)	$ 1,619	$ 402