v3.21.1
SUPPLEMENTAL CASH FLOW INFORMATION
3 Months Ended
Mar. 31, 2021
Supplemental Cash Flow Information [Abstract]  
SUPPLEMENTAL CASH FLOW INFORMATION SUPPLEMENTAL CASH FLOW INFORMATION
Changes in current assets and current liabilities were as follows:
 Three Months Ended March 31,
 20212020
 (Thousands of Dollars)
Decrease (increase) in current assets:
Accounts receivable$12,232 $7,778 
Inventories(6,471)1,648 
Other current assets9,689 7,007 
Increase (decrease) in current liabilities:
Accounts payable5,067 (18,082)
Accrued interest payable27,149 2,680 
Accrued liabilities(19,082)(5,679)
Taxes other than income tax(4,187)(5,137)
Changes in current assets and current liabilities$24,397 $(9,785)

The above changes in current assets and current liabilities differ from changes between amounts reflected in the applicable consolidated balance sheets due to:
the change in the amount accrued for capital expenditures;
the effect of foreign currency translation;
changes in the fair values of our interest rate swap agreements prior to termination; and
the effect of accrued compensation expense paid with fully vested common unit awards.
Cash flows related to interest and income taxes were as follows:
 Three Months Ended March 31,
 20212020
 (Thousands of Dollars)
Cash paid for interest, net of amount capitalized$24,737 $43,172 
Cash paid for income taxes, net of tax refunds received$554 $90 

As of March 31, 2021 and December 31, 2020, restricted cash, representing legally restricted funds that are unavailable for general use, is included in "Other long-term assets, net" on the consolidated balance sheets. “Cash, cash equivalents and restricted cash” on the consolidated statements of cash flows was included in the consolidated balance sheets as follows:
March 31, 2021December 31, 2020
(Thousands of Dollars)
Cash and cash equivalents$28,246 $153,625 
Other long-term assets, net8,801 8,801 
Cash, cash equivalents and restricted cash$37,047 $162,426