Segment Reporting (Tables)	9 Months Ended
Dec. 31, 2021
Segment Reporting [Abstract]
Revenue and Adjusted EBITDA for each Reportable Segment	Three Months Ended Nine Months Ended December 31, December 31, 2021 2020 2021 2020Segment Revenue Software and Analytics $ 386,020 $ 372,212 $ 1,169,760 $ 1,118,661Network Solutions 226,963 192,588 652,023 519,509Technology-Enabled Services 232,760 222,514 690,210 642,037Postage and Eliminations (1) 20,322 22,006 56,431 73,142Purchase Accounting Adjustment (2) — (24,179) (7,740) (118,088)Net Revenue $ 866,065 $ 785,141 $ 2,560,684 $ 2,235,261Segment Adjusted EBITDA Software and Analytics $ 125,131 $ 120,779 $ 397,814 $ 382,103Network Solutions 120,735 103,847 343,208 268,858Technology-Enabled Services 13,673 8,798 47,706 11,158Adjusted EBITDA $ 259,539 $ 233,424 $ 788,728 $ 662,119 Reconciliation of income (loss) before tax provision (benefit) to Adjusted EBITDA Income (loss) before income tax provision (benefit) $ (34,587) $ (2,366) $ (99,793) $ (130,531)Amortization of capitalized software developed for sale 935 460 2,510 550Depreciation and amortization 170,782 151,143 502,463 436,552Interest expense 58,433 61,439 177,284 185,733Equity compensation 24,807 10,944 74,718 34,858Acquisition accounting adjustments (4,864) 20,601 (7,077) 103,826Acquisition and divestiture-related costs 8,707 2,661 28,867 10,119Integration and related costs 5,894 9,688 23,195 27,581Strategic initiatives, duplicative and transition costs 13,492 4,324 38,064 13,169Severance costs 2,640 2,591 14,663 10,467Accretion and changes in estimate, net 4,482 (2,759) 13,570 8,429Impairment of long-lived assets and other 2,537 658 4,230 14,418Loss on extinguishment of debt 1,653 6,145 3,885 7,634Gain on sale of businesses — (32,217) — (60,487)Contingent consideration — — — (3,000)Other non-routine, net 4,628 112 12,149 2,801Adjusted EBITDA $ 259,539 $ 233,424 $ 788,728 $ 662,119 (1)Revenue for the Postage and Eliminations segment includes postage revenue of $54,917 and $49,877 for the three months ended December 31, 2021 and 2020, respectively, and $158,675 and $145,672 for the nine months ended December 31, 2021 and 2020, respectively.(2)Amount reflects the impact to deferred revenue resulting from the Merger which reduced revenue recognized during the period.

Segment Reporting (Tables)

9 Months Ended

Dec. 31, 2021

Revenue and Adjusted EBITDA for each Reportable Segment

Three Months Ended Nine Months Ended December 31, December 31, 2021 2020 2021 2020Segment Revenue Software and Analytics $ 386,020 $ 372,212 $ 1,169,760 $ 1,118,661Network Solutions 226,963 192,588 652,023 519,509Technology-Enabled Services 232,760 222,514 690,210 642,037Postage and Eliminations (1) 20,322 22,006 56,431 73,142Purchase Accounting Adjustment (2) — (24,179) (7,740) (118,088)Net Revenue $ 866,065 $ 785,141 $ 2,560,684 $ 2,235,261Segment Adjusted EBITDA Software and Analytics $ 125,131 $ 120,779 $ 397,814 $ 382,103Network Solutions 120,735 103,847 343,208 268,858Technology-Enabled Services 13,673 8,798 47,706 11,158Adjusted EBITDA $ 259,539 $ 233,424 $ 788,728 $ 662,119 Reconciliation of income (loss) before tax provision (benefit) to Adjusted EBITDA Income (loss) before income tax provision (benefit) $ (34,587) $ (2,366) $ (99,793) $ (130,531)Amortization of capitalized software developed for sale 935 460 2,510 550Depreciation and amortization 170,782 151,143 502,463 436,552Interest expense 58,433 61,439 177,284 185,733Equity compensation 24,807 10,944 74,718 34,858Acquisition accounting adjustments (4,864) 20,601 (7,077) 103,826Acquisition and divestiture-related costs 8,707 2,661 28,867 10,119Integration and related costs 5,894 9,688 23,195 27,581Strategic initiatives, duplicative and transition costs 13,492 4,324 38,064 13,169Severance costs 2,640 2,591 14,663 10,467Accretion and changes in estimate, net 4,482 (2,759) 13,570 8,429Impairment of long-lived assets and other 2,537 658 4,230 14,418Loss on extinguishment of debt 1,653 6,145 3,885 7,634Gain on sale of businesses — (32,217) — (60,487)Contingent consideration — — — (3,000)Other non-routine, net 4,628 112 12,149 2,801Adjusted EBITDA $ 259,539 $ 233,424 $ 788,728 $ 662,119 (1)Revenue for the Postage and Eliminations segment includes postage revenue of $54,917 and $49,877 for the three months ended December 31, 2021 and 2020, respectively, and $158,675 and $145,672 for the nine months ended December 31, 2021 and 2020, respectively.(2)Amount reflects the impact to deferred revenue resulting from the Merger which reduced revenue recognized during the period.