Accrued expenses as of June 30, 2019, were $2,335 million, compared to $1,869 million as of March 31, 2019. The increase in the second quarter of 2019 was mainly due to provisions made under legal settlements and loss contingencies.
Investment in property, plant and equipment in the second quarter of 2019 was approximately $112 million, compared to $125 million in the first quarter of 2019. Depreciation in the second quarter of 2019 was $153 million, compared to $152 million in the first quarter of 2019.
Cash and cash equivalents and short-term and long-term investments as of June 30, 2019 were $2,232 million, compared to $2,040 million as of March 31, 2019. The increase in the second quarter of 2019 was mainly due to cash generated during the quarter.
Our cash on hand that is not used for ongoing operations is generally invested in bank deposits as well as liquid securities that bear fixed and floating rates.
Our principal sources of short-term liquidity are our cash on hand, existing cash investments, liquid securities and available credit facilities, primarily our $2.3 billion revolving credit facility (“RCF”).
In April 2019, we entered into a $2.3 billion unsecured syndicated RCF, which replaced the previous $3 billion revolving credit facility. The RCF contains certain covenants, including certain limitations on incurring liens and indebtedness and maintenance of certain financial ratios, including the requirement to maintain compliance with a net debt to EBITDA ratio, which becomes more restrictive over time. The net debt to EBITDA ratio limit is 6.25x through December 31, 2019, gradually declines to 5.75x in the third and fourth quarters of 2020, and continues to gradually decline over the remaining term of the RCF.
The RCF can be used for general corporate purposes, including repaying existing debt. As of June 30, 2019, no amounts were outstanding under the RCF. As of the date of this report, $500 million was outstanding under the RCF. Based on current and forecasted results, we expect that we will not exceed the financial covenant thresholds set forth in the RCF within one year from the date that the financial statements are issued.
Under specified circumstances, including non-compliance with any of the covenants described above and the unavailability of any waiver, amendment or other modification thereto, we will not be able to borrow under the RCF. Additionally, violations of the covenants, under the above-mentioned circumstances, would result in an event of default in all borrowings under the RCF and, when greater than a specified threshold amount as set forth in each series of senior notes is outstanding, could lead to an event of default under our senior notes due to cross acceleration provisions.
We expect that we will continue to have sufficient cash resources to support our debt service payments and all other financial obligations within one year from the date that the financial statements are issued.
Debt Balance and Movements
As of June 30, 2019, our debt was $28,726 million, compared to $28,624 million as of March 31, 2019. The increase was mainly due to exchange rates fluctuations.
During the first quarter of 2019, we repurchased and canceled approximately $126 million principal amount of our $1,700 million 1.7% senior notes due July 2019.
During the second quarter of 2019, we repurchased and canceled approximately $18 million principal amount of our $1,574 million 1.7% senior notes due July 2019.
In July 2019, we repaid at maturity our $1,556 million 1.7% senior notes.
Our debt as of June 30, 2019 was effectively denominated in the following currencies: 66% in U.S. dollars, 32% in euros and 2% in Swiss francs.
The portion of total debt classified as short-term as of June 30, 2019 was 10%, similar to March 31, 2019.
Our financial leverage was 65% as of June 30, 2019, a slight increase compared to 64% as of March 31, 2019.
Our average debt maturity was approximately 6.3 years as of June 30, 2019, compared to 6.6 years as of March 31, 2019.
Total equity was $15,251 million as of June 30, 2019, compared to $15,821 million as of March 31, 2019. The decrease was mainly due to net loss of $671 million, partially offset by $86 million in exchange rate fluctuations in the second quarter of 2019.
Exchange rate fluctuations affected our balance sheet, as approximately 36% of our net assets in the second quarter of 2019 (including both non-monetary and monetary assets) were in currencies other than the U.S. dollar. When compared to March 31, 2019, changes in currency rates had a positive impact of $86 million on our equity as of June 30, 2019, mainly due to the changes in value against the U.S. dollar of: the Japanese yen by 3%, the euro by 1%, the Russian ruble by 4%, the British pound by 3%, the Canadian dollar by 2% and the Polish zloty by 3%. All comparisons are on a quarter-end to quarter-end basis.