Business Combinations On December 15, 2017, the Company completed the acquisition of CH2M HILL Companies, Ltd. (CH2M), an international provider of engineering, construction and technical services, by acquiring 100% of the outstanding shares of CH2M common stock and preferred stock. The purpose of the acquisition was to further diversify the Companys presence in the water, nuclear and environmental remediation sectors and to further the Companys profitable growth strategy. The Company paid total consideration of approximately $1.8 billion in cash (excluding $315.2 million of cash acquired) and issued approximately $1.4 billion of Jacobs common stock, or 20.7 million shares, to the former stockholders and certain equity award holders of CH2M. In connection with the acquisition, the Company also assumed CH2Ms revolving credit facility and second lien notes, including a $20.0 million prepayment penalty, which totaled approximately $700 million of long-term debt. Immediately following the effective time of the acquisition, the Company repaid CH2Ms revolving credit facility and second lien notes including the related prepayment penalty. The following summarizes the estimated fair values of CH2M assets acquired and liabilities assumed as of the acquisition date (in millions): Assets Cash and cash equivalents $ 315.2 Receivables 1,124.6 Prepaid expenses and other 72.7 Property, equipment and improvements, net 175.1 Goodwill 3,129.1 Identifiable intangible assets: Customer relationships, contracts and backlog 412.3 Lease intangible assets 4.4 Total identifiable intangible assets 416.7 Miscellaneous 522.9 Total Assets $ 5,756.3 Liabilities Notes payable $ 2.2 Accounts payable 309.6 Accrued liabilities 753.1 Billings in excess of costs 260.8 Identifiable intangible liabilities: Lease intangible liabilities 9.6 Long-term debt 706.0 Other deferred liabilities 653.0 Total Liabilities 2,694.3 Noncontrolling interests (37.3 ) Net assets acquired $ 3,024.7 The purchase price allocation is based upon preliminary information and is subject to change when additional information is obtained. Goodwill recognized results from a substantial assembled workforce, which does not qualify for separate recognition, as well as expected future synergies from combining operations. None of the goodwill recognized is expected to be deductible for tax purposes. The Company has not completed its final assessment of the fair values of purchased receivables, intangible assets, tax balances, contingent liabilities or acquired contracts. The final purchase price allocation will result in adjustments to certain assets and liabilities, including the residual amount allocated to goodwill. Accrued liabilities and other deferred liabilities include approximately $385.3 million related to provisional estimates related to various legal and other pre-acquisition contingent liabilities accounted for under ASC 450. See Note 15- Contractual Guarantees, Litigation, Investigations and Insurance relating to CH2M contingencies. Since the initial preliminary estimates reported in the first quarter of 2018, the Company has updated certain provisional amounts reflected in the preliminary purchase price allocation, as summarized in the estimated fair values of CH2M assets acquired and liabilities assumed above. Specifically, the carrying amount of the intangible assets discussed above were decreased by $186.2 million as a result of valuation adjustments. Additionally, the carrying amount of property, equipment and improvements, net decreased by $50.5 million to reflect its estimated fair value, receivables decreased $77.3 million and accrued liabilities and other deferred liabilities increased $364.4 million primarily related to provisional estimates related to various legal and other pre-acquisition contingent liabilities. Further, miscellaneous long-term assets increased $245.5 million largely due to the deferred tax impact of these valuation adjustments. As a result of these adjustments to the initial preliminary purchase price allocation, goodwill has increased $430.3 million. Measurement period adjustments are recognized in the reporting period in which the adjustments are determined and calculated as if the accounting had been completed at the acquisition date. Customer relationships, contracts and backlog represent the fair value of existing contracts, the underlying customer relationships and backlog of consolidated subsidiaries and have lives ranging from 9 to 11 years (weighted average life of approximately 10 years ). Other intangible assets and liabilities primarily consist of the fair value of office leases and have a weighted average life of approximately 10 years . Estimated fair value measurements relating to the CH2M acquisition are made using Level 3 inputs including discounted cash flow techniques. Fair value is estimated using inputs primarily from the income approach, which include the use of both the multiple period excess earnings method and the relief from royalties method. The significant assumptions used in estimating fair value include (i) the estimated life the asset will contribute to cash flows, such as attrition rate of customers or remaining contractual terms, (ii) profitability and (iii) the estimated discount rate that reflect the level of risk associated with receiving future cash flows. The estimated fair value of land has been determined using the market approach, which arrives at an indication of value by comparing the site being valued to sites that have been recently acquired in arms-length transactions. Personal property assets with an active and identifiable secondary market are valued using the market approach. Buildings and land improvements are valued using the cost approach using a direct cost model built on estimates of replacement cost. Other personal property assets such as furniture, fixtures and equipment are valued using the cost approach which is based on replacement or reproduction costs of the asset less depreciation. From the acquisition date of December 15, 2017 through the end of September 28, 2018 , CH2M contributed approximately $3.8 billion in revenue and $185.9 million in pretax income included in the accompanying consolidated statement of earnings. Included in these results were approximately $99.3 million in pre-tax restructuring and transaction costs. Transaction costs associated with the CH2M acquisition in the accompanying consolidated statements of earnings for the years ended September 28, 2018 and September 29, 2017 are comprised of the following (in millions): For the Years Ended September 28, 2018 September 29, 2017 Personnel costs $ 50.2 $ 2.2 Professional services and other expenses 27.5 14.9 Total $ 77.7 $ 17.1 Personnel costs above include change of control payments and related severance costs. The following presents summarized unaudited pro forma operating results assuming that the Company had acquired CH2M at October 1, 2016. These pro forma operating results are presented for illustrative purposes only and are not indicative of the operating results that would have been achieved had the related events occurred (in millions): For the Years Ended September 28, 2018 September 29, 2017 Revenues $ 16,012.4 $ 14,612.4 Net earnings $ 196.3 $ 264.8 Net earnings (loss) attributable to Jacobs $ 184.5 $ 243.6 Net earnings (loss) attributable to Jacobs per share: Basic earnings (loss) per share $ 1.28 $ 1.73 Diluted earnings (loss) per share $ 1.27 $ 1.72 Included in the unaudited pro forma operating results are charges relating to transaction expenses, severance expense and other items that are removed from the year ended September 28, 2018 and are reflected in the year ended September 29, 2017 due to the assumed timing of the transaction. Also, income tax expense (benefit) for the twelve month pro forma periods ended September 28, 2018 and September 29, 2017 was $409.7 million and $24.2 million , respectively. In fiscal 2017, the Company recorded $119.3 million of goodwill in conjunction with the acquisitions of Aquenta Consulting Pty Ltd. and Blue Canopy LLC. The Company has completed its final assessment of the fair values of purchased assets and liabilities of the related companies acquired.