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
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)						0	(9)
Restricted stock awarded	0		(1)			1	0
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)						0	(2)
Restricted stock awarded							0
Contributions from noncontrolling interest	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)						0	(25)
Restricted stock awarded	0		(1)			1	0
Contributions from noncontrolling interest	2							2
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
Balance at beginning of period at Dec. 31, 2019	2,092	929	207	3,959	(3,131)	(251)	1,713	379
Net income attributable to Crown Holdings				88			88
Net income attributable to noncontrolling interests								26
Net income	114
Other comprehensive income	(96)				(91)		(91)	(5)
Dividends paid to noncontrolling interests	(11)							(11)
Restricted stock awarded	0		(1)			1
Stock-based compensation	10		10				10
Common stock issued	1		1				1
Common stock repurchased	(57)		(52)			(5)	(57)
Balance at end of period at Mar. 31, 2020	2,053	929	165	4,047	(3,222)	(255)	1,664	389
Balance at beginning of period at Dec. 31, 2019	2,092	929	207	3,959	(3,131)	(251)	1,713	379
Net income attributable to Crown Holdings	428
Net income attributable to noncontrolling interests	72
Net income	500
Other comprehensive income	(197)
Balance at end of period at Sep. 30, 2020	2,318	929	177	4,387	(3,329)	(255)	1,909	409
Balance at beginning of period at Mar. 31, 2020	2,053	929	165	4,047	(3,222)	(255)	1,664	389
Net income attributable to Crown Holdings				126			126
Net income attributable to noncontrolling interests								15
Net income	141
Other comprehensive income	24				21		21	3
Dividends paid to noncontrolling interests	(1)							(1)
Restricted stock awarded	0		(1)			1
Stock-based compensation	5		5				5
Common stock repurchased	(1)					(1)	(1)
Balance at end of period at Jun. 30, 2020	2,221	929	169	4,173	(3,201)	(255)	1,815	406
Net income attributable to Crown Holdings	214			214			214
Net income attributable to noncontrolling interests	31							31
Net income	245
Other comprehensive income	(125)				(128)		(128)	3
Dividends paid to noncontrolling interests	(31)							(31)
Stock-based compensation	8		8				8
Balance at end of period at Sep. 30, 2020	$ 2,318	$ 929	$ 177	$ 4,387	$ (3,329)	$ (255)	$ 1,909	$ 409