Condensed Combining Financial Information - Condensed Combining Balance Sheet (Details) - USD ($) $ in Millions	Mar. 31, 2019	Jan. 01, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Cash and cash equivalents	$ 301		$ 607
Receivables, net	1,686		1,602
Inventories	1,851		1,690
Prepaid expenses and other current assets	186		180
Total current assets	4,024		4,079
Goodwill	4,418		4,442
Intangible assets, net	2,136		2,193
Property, plant and equipment, net	3,734		3,745
Operating lease right-of-use assets	213	$ 220
Other non-current assets	832		803
Total	15,357		15,262
Short-term debt	125		89
Current maturities of long-term debt	83		81
Current portion of operating lease liabilities	47
Accounts payable	2,223		2,732
Accrued liabilities	864		1,011
Total current liabilities	3,342		3,913
Long-term debt, excluding current maturities	8,814		8,493
Non-current portion of operating lease liabilities	167
Postretirement and pension liabilities	671		683
Other non-current liabilities	861		887
Commitments and contingent liabilities
Noncontrolling interests	368		349
Crown Holdings shareholders’ equity/(deficit)	1,134		937
Total equity/(deficit)	1,502		1,286	$ 1,112	$ 923
Total	15,357		15,262
Crown Cork & Seal Company Inc.
Cash and cash equivalents	301		607
Receivables, net	1,686		1,602
Inventories	1,851		1,690
Prepaid expenses and other current assets	186		180
Total current assets	4,024		4,079
Goodwill	4,418		4,442
Intangible assets, net	2,136		2,193
Property, plant and equipment, net	3,734		3,745
Operating lease right-of-use assets	213
Other non-current assets	832		803
Total	15,357		15,262
Short-term debt	125		89
Current maturities of long-term debt	83		81
Current portion of operating lease liabilities	47
Accounts payable	2,223		2,732
Accrued liabilities	864		1,011
Total current liabilities	3,342		3,913
Long-term debt, excluding current maturities	8,814		8,493
Long-term intercompany debt	0
Non-current portion of operating lease liabilities	167
Postretirement and pension liabilities	671		683
Other non-current liabilities	861		887
Commitments and contingent liabilities
Noncontrolling interests	368		349
Crown Holdings shareholders’ equity/(deficit)	1,134		937
Total equity/(deficit)	1,502		1,286
Total	15,357		15,262
Crown Cork & Seal Company Inc. | Parent
Cash and cash equivalents
Receivables, net
Inventories
Prepaid expenses and other current assets	2		1
Total current assets	2		1
Intercompany debt receivables
Investments	3,647		3,458
Goodwill
Intangible assets, net
Property, plant and equipment, net
Operating lease right-of-use assets
Other non-current assets
Total	3,649		3,459
Short-term debt
Current maturities of long-term debt
Current portion of operating lease liabilities
Accounts payable
Accrued liabilities	8		14
Total current liabilities	8		14
Long-term debt, excluding current maturities
Long-term intercompany debt	2,507		2,508
Non-current portion of operating lease liabilities
Postretirement and pension liabilities
Other non-current liabilities
Commitments and contingent liabilities
Noncontrolling interests
Crown Holdings shareholders’ equity/(deficit)	1,134		937
Total equity/(deficit)	1,134		937
Total	3,649		3,459
Crown Cork & Seal Company Inc. | Issuer
Cash and cash equivalents
Receivables, net	9		9
Inventories
Prepaid expenses and other current assets	1		1
Total current assets	10		10
Intercompany debt receivables
Investments	3,950		3,764
Goodwill
Intangible assets, net
Property, plant and equipment, net
Operating lease right-of-use assets
Other non-current assets	147		156
Total	4,107		3,930
Short-term debt
Current maturities of long-term debt
Current portion of operating lease liabilities
Accounts payable
Accrued liabilities	34		30
Total current liabilities	34		30
Long-term debt, excluding current maturities	388		388
Long-term intercompany debt	1,055		1,053
Non-current portion of operating lease liabilities
Postretirement and pension liabilities
Other non-current liabilities	325		325
Commitments and contingent liabilities
Noncontrolling interests
Crown Holdings shareholders’ equity/(deficit)	2,305		2,134
Total equity/(deficit)	2,305		2,134
Total	4,107		3,930
Crown Cork & Seal Company Inc. | Non- Guarantors
Cash and cash equivalents	301		607
Receivables, net	1,677		1,593
Inventories	1,851		1,690
Prepaid expenses and other current assets	183		178
Total current assets	4,012		4,068
Intercompany debt receivables	3,562		3,561
Investments
Goodwill	4,418		4,442
Intangible assets, net	2,136		2,193
Property, plant and equipment, net	3,734		3,745
Operating lease right-of-use assets	213
Other non-current assets	685		647
Total	18,760		18,656
Short-term debt	125		89
Current maturities of long-term debt	83		81
Current portion of operating lease liabilities	47
Accounts payable	2,223		2,732
Accrued liabilities	822		967
Total current liabilities	3,300		3,869
Long-term debt, excluding current maturities	8,426		8,105
Long-term intercompany debt
Non-current portion of operating lease liabilities	167
Postretirement and pension liabilities	671		683
Other non-current liabilities	536		562
Commitments and contingent liabilities
Noncontrolling interests	368		349
Crown Holdings shareholders’ equity/(deficit)	5,292		5,088
Total equity/(deficit)	5,660		5,437
Total	18,760		18,656
Crown Americas, LLC
Cash and cash equivalents	301		607
Receivables, net	1,686		1,602
Intercompany receivables			0
Inventories	1,851		1,690
Prepaid expenses and other current assets	186		180
Total current assets	4,024		4,079
Intercompany debt receivables			0
Investments			0
Goodwill	4,418		4,442
Intangible assets, net	2,136		2,193
Property, plant and equipment, net	3,734		3,745
Operating lease right-of-use assets	213
Other non-current assets	832		803
Total	15,357		15,262
Short-term debt	125		89
Current maturities of long-term debt	83		81
Current portion of operating lease liabilities	47
Accounts payable	2,223		2,732
Accrued liabilities	864		1,011
Total current liabilities	3,342		3,913
Long-term debt, excluding current maturities	8,814		8,493
Long-term intercompany debt			0
Non-current portion of operating lease liabilities	167
Postretirement and pension liabilities	671		683
Other non-current liabilities	861		887
Commitments and contingent liabilities
Noncontrolling interests	368		349
Crown Holdings shareholders’ equity/(deficit)	1,134		937
Total equity/(deficit)	1,502		1,286
Total	15,357		15,262
Crown Americas, LLC | Parent
Cash and cash equivalents
Receivables, net
Intercompany receivables
Inventories
Prepaid expenses and other current assets	2		1
Total current assets	2		1
Intercompany debt receivables
Investments	3,647		3,458
Goodwill
Intangible assets, net
Property, plant and equipment, net
Operating lease right-of-use assets
Other non-current assets
Total	3,649		3,459
Short-term debt
Current maturities of long-term debt
Current portion of operating lease liabilities
Accounts payable
Accrued liabilities	8		14
Intercompany payables
Total current liabilities	8		14
Long-term debt, excluding current maturities
Long-term intercompany debt	2,507		2,508
Non-current portion of operating lease liabilities
Postretirement and pension liabilities
Other non-current liabilities
Commitments and contingent liabilities
Noncontrolling interests
Crown Holdings shareholders’ equity/(deficit)	1,134		937
Total equity/(deficit)	1,134		937
Total	3,649		3,459
Crown Americas, LLC | Issuer
Cash and cash equivalents	28		117
Receivables, net	4		4
Intercompany receivables
Inventories
Prepaid expenses and other current assets	2		1
Total current assets	34		122
Intercompany debt receivables	3,004		2,577
Investments	2,720		2,657
Goodwill
Intangible assets, net
Property, plant and equipment, net	1		1
Operating lease right-of-use assets	4
Other non-current assets	46		29
Total	5,809		5,386
Short-term debt
Current maturities of long-term debt	42		37
Current portion of operating lease liabilities
Accounts payable
Accrued liabilities	24		49
Intercompany payables
Total current liabilities	66		86
Long-term debt, excluding current maturities	3,372		2,999
Long-term intercompany debt	739		746
Non-current portion of operating lease liabilities	4
Postretirement and pension liabilities
Other non-current liabilities
Commitments and contingent liabilities
Noncontrolling interests
Crown Holdings shareholders’ equity/(deficit)	1,628		1,555
Total equity/(deficit)	1,628		1,555
Total	5,809		5,386
Crown Americas, LLC | Guarantors
Cash and cash equivalents	5		19
Receivables, net	194		182
Intercompany receivables	30		33
Inventories	565		485
Prepaid expenses and other current assets	24		17
Total current assets	818		736
Intercompany debt receivables	3,368		3,449
Investments	1,394		1,248
Goodwill	1,178		1,178
Intangible assets, net	880		901
Property, plant and equipment, net	701		693
Operating lease right-of-use assets	74
Other non-current assets	189		192
Total	8,602		8,397
Short-term debt
Current maturities of long-term debt
Current portion of operating lease liabilities	18
Accounts payable	630		725
Accrued liabilities	137		144
Intercompany payables	17		13
Total current liabilities	802		882
Long-term debt, excluding current maturities	1,004		1,274
Long-term intercompany debt	3,057		2,700
Non-current portion of operating lease liabilities	58
Postretirement and pension liabilities	416		432
Other non-current liabilities	318		332
Commitments and contingent liabilities
Noncontrolling interests
Crown Holdings shareholders’ equity/(deficit)	2,947		2,777
Total equity/(deficit)	2,947		2,777
Total	8,602		8,397
Crown Americas, LLC | Non- Guarantors
Cash and cash equivalents	268		471
Receivables, net	1,488		1,416
Intercompany receivables	17		13
Inventories	1,286		1,205
Prepaid expenses and other current assets	158		161
Total current assets	3,217		3,266
Intercompany debt receivables	12		12
Investments
Goodwill	3,240		3,264
Intangible assets, net	1,256		1,292
Property, plant and equipment, net	3,032		3,051
Operating lease right-of-use assets	135
Other non-current assets	597		582
Total	11,489		11,467
Short-term debt	125		89
Current maturities of long-term debt	41		44
Current portion of operating lease liabilities	29
Accounts payable	1,593		2,007
Accrued liabilities	695		804
Intercompany payables	30		33
Total current liabilities	2,513		2,977
Long-term debt, excluding current maturities	4,438		4,220
Long-term intercompany debt	81		84
Non-current portion of operating lease liabilities	105
Postretirement and pension liabilities	255		251
Other non-current liabilities	543		555
Commitments and contingent liabilities
Noncontrolling interests	368		349
Crown Holdings shareholders’ equity/(deficit)	3,186		3,031
Total equity/(deficit)	3,554		3,380
Total	11,489		11,467
Eliminations | Crown Cork & Seal Company Inc.
Cash and cash equivalents
Receivables, net
Inventories
Prepaid expenses and other current assets
Intercompany debt receivables	(3,562)		(3,561)
Investments	(7,597)		(7,222)
Goodwill
Intangible assets, net
Property, plant and equipment, net
Operating lease right-of-use assets
Other non-current assets
Total	(11,159)		(10,783)
Short-term debt
Current maturities of long-term debt
Current portion of operating lease liabilities
Accounts payable
Accrued liabilities
Long-term debt, excluding current maturities
Long-term intercompany debt	(3,562)		(3,561)
Non-current portion of operating lease liabilities
Postretirement and pension liabilities
Other non-current liabilities
Commitments and contingent liabilities
Noncontrolling interests
Crown Holdings shareholders’ equity/(deficit)	(7,597)		(7,222)
Total equity/(deficit)	(7,597)		(7,222)
Total	(11,159)		(10,783)
Eliminations | Crown Americas, LLC
Cash and cash equivalents
Receivables, net
Intercompany receivables	(47)		(46)
Inventories
Prepaid expenses and other current assets
Total current assets	(47)		(46)
Intercompany debt receivables	(6,384)		(6,038)
Investments	(7,761)		(7,363)
Goodwill
Intangible assets, net
Property, plant and equipment, net
Operating lease right-of-use assets
Other non-current assets
Total	(14,192)		(13,447)
Short-term debt
Current maturities of long-term debt
Current portion of operating lease liabilities
Accounts payable
Accrued liabilities
Intercompany payables	(47)		(46)
Total current liabilities	(47)		(46)
Long-term debt, excluding current maturities
Long-term intercompany debt	(6,384)		(6,038)
Non-current portion of operating lease liabilities
Postretirement and pension liabilities
Other non-current liabilities
Commitments and contingent liabilities
Noncontrolling interests
Crown Holdings shareholders’ equity/(deficit)	(7,761)		(7,363)
Total equity/(deficit)	(7,761)		(7,363)
Total	$ (14,192)		$ (13,447)