In its 2018 Annual Report to Shareholders, Henchman & Co. provided the following Statement of Cash Flows:

Years ended December 31 ($ in millions) Financing Activities Proceeds from issuance of long-term debt Proceeds from equity security units Borrowings under lines of credit Repayment of borrowings under lines of Credit Principal payments of long-term debt/lease agreements Proceeds from issuance of stock Dividends paid Other financing activities Net cash provided by (used in) financing activities Increase in cash and cash equivalents Cash and cash equivalents at beginning of year Cash and cash equivalents at end of year 20181,4916901,173(1,306)(119)825(158)(64)2,532145319$4642017(175)(485)19(114)−(755)177142$319
-(a.) What is the most significant change in operating cash outflow activity in 2018 relative to 2017?
(b.) What balance sheet accounts would likely have changed during 2018 in relation to the cash flow change that you identify in (a)?
National Mediation Board
A federal agency that facilitates and mediates labor-management relations within the United States' railroad and airline industries.
Railway Labor Act
A 1926 United States federal law that governs labor relations in the railway and airline industries, aiming to avoid service disruptions.
Third Party Dispute
A conflict involving an external party to assist or decide in the resolution process between two other parties, commonly found in mediation or arbitration scenarios.
Conventional Arbitration
A form of arbitration where the arbitrator has complete discretion to determine the outcome, without being required to follow specific legal precedents.