Supplemental Cash Flow Information

12 Months Ended

Dec. 31, 2021

Supplemental Cash Flow Information [Abstract]

Supplemental Cash Flow Information

Supplemental Cash Flow InformationThe changes in assets and liabilities included in operating cash flow follow:

	Year Ended December 31,
(in thousands)	2021		2020		2019
(Increase) decrease in:
Accounts and notes receivable, net	$	5,393	$	138,388	$	210,419
Contract assets	(178,632)		280,360		207,467
Other current assets	(167,416)		3,893		(80,248)
Other assets	283,895		76,613		44,707
Increase (decrease) in:
Accounts payable	6,360		(343,113)		(46,873)
Contract liabilities	(175,812)		(53,580)		202,359
Accrued liabilities	108,896		(11,829)		29,880
Other liabilities	(79,336)		(59,684)		63,986
Increase (decrease) in cash due to changes in assets and liabilities	$	(196,652)	$	31,048	$	631,697
Cash paid during the year for:
Interest	$	90,299	$	65,641	$	71,938
Income taxes (net of refunds)	74,589		65,188		204,080