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Goodwill (Goodwill) (Details) $ in Millions | 6 Months Ended
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Sep. 30, 2017 USD ($)
Goodwill [Roll Forward] |  |
Balance as of March 31, 2017 | $ 2,700.5 |
Measurement period adjustments for Starz Merger | 10.0 | [1]
Balance as of September 30, 2017 | 2,710.5 |
Motion Pictures |  |
Goodwill [Roll Forward] |  |
Balance as of March 31, 2017 | 361.9 |
Measurement period adjustments for Starz Merger | 2.8 | [1]
Balance as of September 30, 2017 | 364.7 |
Television Production |  |
Goodwill [Roll Forward] |  |
Balance as of March 31, 2017 | 240.4 |
Measurement period adjustments for Starz Merger | 0.0 | [1]
Balance as of September 30, 2017 | 240.4 |
Media Networks |  |
Goodwill [Roll Forward] |  |
Balance as of March 31, 2017 | 2,098.2 |
Measurement period adjustments for Starz Merger | 7.2 | [1]
Balance as of September 30, 2017 | 2,105.4 |
Starz |  |
Goodwill [Roll Forward] |  |
Measurement period adjustments for Starz Merger | 10.0 |
Increase to other assets | 10.9 |
Increase to accounts payable and accrued liabilities | 12.7 |
Increase to deferred tax liabilities | 1.9 |
Increase to other liabilities | 6.3 |
Net decrease of fair value of net assets acquired | $ 10.0 |
[1] | Measurement period adjustments for the Starz Merger include (i) an increase to other assets of $10.9 million; (ii) an increase to accounts payable and accrued liabilities of $12.7 million; (iii) an increase to deferred tax liabilities of $1.9 million; and (iv) an increase to other liabilities assumed of $6.3 million. These adjustments resulted in a net decrease of $10.0 million of the fair value of net assets acquired and an increase of $10.0 million to goodwill.

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