XML 17 R2.htm IDEA: XBRL DOCUMENT
v3.20.4

Document and Entity Address - USD ($) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2020 | Jan. 31, 2021 | Jun. 30, 2020
Entity Addresses [Line Items] |  |  |
Entity Address, Address Line One | 16600 Swingley Ridge Road |  |
Entity Address, City or Town | Chesterfield |  |
Entity Address, State or Province | MO |  |
Entity Address, Postal Zip Code | 63017 |  |
City Area Code | 636 |  |
Local Phone Number | 736-7000 |  |
Entity public float |  |  | $ 5,300
Common Shares Outstanding |  | 67,972,976 |

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