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Goodwill (Goodwill) (Details) $ in Millions | 3 Months Ended
--- | ---
Jun. 30, 2018 USD ($)
Goodwill [Roll Forward] |  |
Balance as of March 31, 2018 | $ 2,740.8 |
Business acquisitions | 92.0 | [1]
Other | 0.0 | [2]
Balance as of June 30, 2018 | 2,832.8 |
Motion Pictures |  |
Goodwill [Roll Forward] |  |
Balance as of March 31, 2018 | 393.7 |
Business acquisitions | 0.0 | [1]
Other | 0.0 | [2]
Balance as of June 30, 2018 | 393.7 |
Television Production |  |
Goodwill [Roll Forward] |  |
Balance as of March 31, 2018 | 240.4 |
Business acquisitions | 92.0 | [1]
Other | 68.8 | [2]
Balance as of June 30, 2018 | 401.2 |
Media Networks |  |
Goodwill [Roll Forward] |  |
Balance as of March 31, 2018 | 2,106.7 |
Business acquisitions | 0.0 | [1]
Other | (68.8) | [2]
Balance as of June 30, 2018 | $ 2,037.9 |
[1] | Represents goodwill resulting from the acquisition of 3 Arts Entertainment (see Note 2).
[2] | Represents the reallocation of goodwill as a result of the reorganization of our segment structure (see Note 15).

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