[["( in millions )", "fiscal years ended march 31 2018", "fiscal years ended march 31 2017 ( 1 )", "fiscal years ended april 1 2016 ( 1 )", "fiscal years ended 2018", "fiscal years ended 2017 ( 1 )", "2016 ( 1 )"], ["costs of services ( excludes depreciation and amortization and restructuring costs )", "$ 17944", "$ 5545", "$ 5185", "73.0% ( 73.0 % )", "72.9% ( 72.9 % )", "73.0% ( 73