| Three Months Ended | Six Months Ended | ||||||||||||||
| September 30, | September 30, | ||||||||||||||
| 2018 | 2017 | 2018 | 2017 | ||||||||||||
| Operating income, as reported | $ | 102.7 | $ | 225.4 | $ | 234.9 | $ | 447.0 | |||||||
| Impact of changes in distributor inventory levels | 56.1 | — | 59.5 | — | |||||||||||
| Share-based compensation expense | 41.4 | 23.6 | 70.8 | 46.0 | |||||||||||
| Manufacturing excursion | — | — | — | (0.6 | ) | ||||||||||
| Acquisition-related costs | 6.6 | 0.7 | 33.7 | 3.5 | |||||||||||
| Excess capacity charges to normalize acquired inventory levels | 2.3 | — | 2.3 | — | |||||||||||
| Acquired inventory valuation costs | 182.1 | — | 289.6 | — | |||||||||||
| Amortization of acquired intangible assets | 169.9 | 120.9 | 303.6 | 241.8 | |||||||||||
| Special charges and other, net | 18.2 | 19.9 | 58.3 | 17.1 | |||||||||||
| Non-GAAP operating income | $ | 579.3 | $ | 390.5 | $ | 1,052.7 | $ | 754.8 | |||||||
| Non-GAAP operating income as a percentage of net sales | 38.3 | % | 38.6 | % | 38.6 | % | 38.0 | % | |||||||
RECONCILIATION OF GAAP OTHER EXPENSE, NET TO NON-GAAP OTHER EXPENSE, NET
| Three Months Ended | Six Months Ended | ||||||||||||||
| September 30, | September 30, | ||||||||||||||
| 2018 | 2017 | 2018 | 2017 | ||||||||||||
| Other expense, net, as reported | $ | (142.0 | ) | $ | (39.1 | ) | $ | (236.5 | ) | $ | (94.5 | ) | |||
| Loss on settlement of debt | 4.1 | — | 4.1 | 13.8 | |||||||||||
| Non-cash other expense, net | 28.9 | 27.2 | 65.4 | 54.1 | |||||||||||
| Losses on available-for-sale investments | 0.9 | — | 6.1 | — | |||||||||||
| Non-GAAP other expense, net | $ | (108.1 | ) | $ | (11.9 | ) | $ | (160.9 | ) | $ | (26.6 | ) | |||
| Non-GAAP other expense, net, as a percentage of net sales | (7.1 | )% | (1.2 | )% | (5.9 | )% | (1.3 | )% | |||||||
