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Commitments and Contingencies Commitements and Contingencies (Narrative) (Details) | 9 Months Ended
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Sep. 30, 2019 $ / shares shares
VISA Class B Conversion Ratio | 1.6228
Common Class B [Member] | VISA, Inc. (VISA) [Member] |
Investment Owned, Balance, Shares | shares | 86,605
Common Class A [Member] | VISA, Inc. (VISA) [Member] |
Share Price | $ / shares | $ 172.01

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