XML 67 R52.htm IDEA: XBRL DOCUMENT
v3.20.4

Capital Stock (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2020
Equity [Abstract] |
Summary of Common Share Activity | A summary of common share activity for the years ended December 31 follows (in shares):
|  | 2020 |  | 2019 |  | 2018
Common shares outstanding at January 1 |  | 135,577,878 |  |  | 135,173,948 |  |  | 134,275,609 |
Shares repurchased |  | (1,240,328) |  |  | (106,388) |  |  | (92,167) |
Shares issued upon exercise of employee stock options |  | — |  |  | 70,000 |  |  | — |
Restricted stock issued to employees, net of forfeitures |  | 439,700 |  |  | 416,695 |  |  | 958,672 |
Shares issued to non-employee directors |  | 23,780 |  |  | 23,623 |  |  | 31,834 |
Common shares outstanding at December 31 |  | 134,801,030 |  |  | 135,577,878 |  |  | 135,173,948 |

X
- Definition Summary Of Common Stock Activity + References No definition available. + Details
Name: | cck_SummaryOfCommonStockActivityTableTextBlock
Namespace Prefix: | cck_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_EquityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration