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Restructuring and Related Charges Restructuring and Related Charges (Additional Information) (Details) - USD ($) $ in Millions | Sep. 20, 2019 | Aug. 31, 2019
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2017 Restructuring Plan |  |
Restructuring Cost and Reserve [Line Items] |  |
Total pre-tax restructuring and other related costs expected to be recognized |  | $ 195.0
2020 Restructuring Plan | Subsequent Event |  |
Restructuring Cost and Reserve [Line Items] |  |
Total pre-tax restructuring and other related costs expected to be recognized | $ 85.0 |

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