XML 66 R39.htm IDEA: XBRL DOCUMENT
v3.20.4

Capital Stock (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2020
Stockholders Equity Note [Abstract] |
Schedule of Common Stock Outstanding | Common stock outstanding as of December 31, 2020, 2019 and 2018 was as follows:
(Number of shares in millions) |  | 2020 |  |  | 2019 |  |  | 2018 |
Common stock: |  |  |  |  |  |  |  |  |  |  |  |
Balance, beginning of year |  | 109.3 |  |  | 108.5 |  |  | 107.8 |
Activity under stock plans |  |  | 0.4 |  |  |  | 0.8 |  |  |  | 0.7 |
Balance, end of year |  | 109.7 |  |  | 109.3 |  |  | 108.5 |
Treasury stock: |  |  |  |  |  |  |  |  |  |  |  |
Balance, beginning of year |  | 25.7 |  |  | 23.7 |  |  | 18.2 |
Repurchased |  |  | 0.4 |  |  |  | 2.0 |  |  |  | 5.5 |
Balance, end of year |  | 26.1 |  |  | 25.7 |  |  | 23.7 |
Common stock outstanding |  | 83.6 |  |  | 83.6 |  |  | 84.8 |

X
- Definition Tabular disclosure of an entity's capital units or capital shares, including the value of capital units or capital shares, units authorized, units outstanding and other information necessary to a fair presentation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04.16) -URI http://asc.fasb.org/extlink&oid=120401414&loc=d3e603758-122996 + Details
Name: | us-gaap_ScheduleOfCapitalUnitsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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