| Mar'20 | Dec'19 | Sep'19 | Jun'19 | Mar'19 | Dec'18 | Sep'18 | Jun'18 | Mar'18 | Dec'17 | Sep'17 | Jun'17 | Mar'17 | Dec'16 | Sep'16 | Jun'16 | Mar'16 | Dec'15 | Sep'15 | Jun'15 | Mar'15 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Cash flows from operating activities | ||||||||||||||||||||
Net income | ||||||||||||||||||||
348,269 | 332,895 | 322,567 | 323,887 | 328,253 | 330,571 | 347,304 | 345,750 | 347,744 | 353,058 | 348,324 | 341,938 | 336,660 | 353,403 | 350,997 | 362,184 | 368,235 | 353,853 | 0 | 0 | 0 |
Adjustments to reconcile net income to net cash provided by operating activities | ||||||||||||||||||||
Depreciation and amortization | ||||||||||||||||||||
106,507 | 107,320 | 107,048 | 107,259 | 107,988 | 108,842 | 109,659 | 111,820 | 111,533 | 113,985 | 117,240 | 114,477 | 107,964 | 98,210 | 88,045 | 82,197 | 81,803 | 81,210 | 0 | 0 | 0 |
Provision for doubtful accounts | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | - | 0 | 0 | 0 | - | - | - | - |
Loss from disposition of property, plant and equipment | ||||||||||||||||||||
-154 | -515 | -1,714 | -1,740 | -1,740 | -1,849 | -999 | -3,707 | -3,727 | -3,033 | -3,240 | -447 | -2,567 | -3,021 | -3,942 | -4,155 | -2,138 | -1,812 | 0 | 0 | 0 |
Other losses (gains), net | ||||||||||||||||||||
160 | 459 | -214 | 1,066 | 884 | 347 | 300 | -495 | 195 | 1,040 | 0 | 0 | 0 | - | - | - | - | - | - | - | - |
Gain on involuntary conversion of assets | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | - | 0 | 0 | 0 | - | - | - | - |
Deferred income taxes | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | - | 0 | 0 | -331 | - | 0 | 0 | 0 |
Changes in operating assets and liabilities | ||||||||||||||||||||
Accounts receivable—third parties | ||||||||||||||||||||
-2,092 | -6,934 | -9,076 | 3,635 | -3,811 | -1,470 | 6,564 | 1,752 | -1,368 | 6,146 | 1,093 | 5,932 | 15,167 | 552 | 1,447 | -12,419 | -10,763 | -25,424 | 0 | 0 | 0 |
Net accounts receivable—Westlake | ||||||||||||||||||||
7,694 | -2,358 | -2,687 | 2,908 | -300 | 442 | -21,184 | -37,999 | -45,379 | -84,652 | -64,846 | 4,501 | 26,083 | 90,742 | 75,180 | 38,239 | 21,985 | 11,836 | 0 | 0 | 0 |
Inventories | ||||||||||||||||||||
-2,197 | -1,126 | -528 | -1,338 | -196 | -1,202 | 1,123 | 1,570 | 395 | 1,656 | 453 | 2,065 | 2,186 | 55 | 156 | -1,363 | -1,974 | -2,755 | 0 | 0 | 0 |
Prepaid expenses and other current assets | ||||||||||||||||||||
-47 | 100 | 68 | 41 | 90 | 56 | 78 | 9 | 7 | 45 | 413 | -28 | -3 | 2 | -382 | 43 | 35 | 55 | 0 | 0 | 0 |
Accounts payable | ||||||||||||||||||||
-613 | 421 | -871 | 3,151 | 856 | -4,476 | -3,851 | -1,039 | -6,543 | 1,442 | -7,175 | -29,363 | -4,635 | -2,175 | 2,011 | 21,262 | 7,857 | 836 | 0 | 0 | 0 |
Accrued and other liabilities | ||||||||||||||||||||
-1,235 | 985 | 616 | 95 | 1,985 | -1,974 | -2,748 | 685 | -7,957 | -9 | 978 | -23,781 | 8,677 | 3,791 | 8,109 | 26,843 | 8,369 | 2,317 | 0 | 0 | 0 |
Other, net | ||||||||||||||||||||
1,295 | 1,188 | 926 | 568 | 727 | 488 | -465 | 444 | 153 | 9,917 | 12,009 | 25,897 | 83,642 | 77,911 | 78,514 | 64,356 | 7,076 | 3,488 | 0 | 0 | 0 |
Cash flows from investing activities | ||||||||||||||||||||
448,269 | 450,807 | 441,301 | 429,252 | 443,428 | 436,151 | 465,445 | 495,642 | 494,501 | 537,357 | 512,272 | 364,735 | 324,229 | 287,726 | 298,709 | 407,920 | 451,882 | 452,542 | 0 | 0 | 0 |
Cash flows from investing activities | ||||||||||||||||||||
Additions to property, plant and equipment | ||||||||||||||||||||
43,552 | 43,707 | 39,843 | 48,824 | 42,327 | 39,862 | 42,298 | 41,482 | 55,369 | 68,858 | 87,598 | 175,101 | 243,715 | 299,638 | 347,260 | 304,204 | 270,736 | 231,185 | 0 | 0 | 0 |
Maturities of investments with Westlake under the Investment Management Agreement | ||||||||||||||||||||
514,445 | 515,445 | 507,445 | 538,495 | 340,050 | 372,050 | 332,878 | 240,828 | 174,828 | 62,828 | 0 | 0 | 0 | - | - | - | - | - | - | - | - |
Investments with Westlake under the Investment Management Agreement | ||||||||||||||||||||
399,933 | 529,445 | 520,445 | 535,445 | 481,512 | 384,000 | 365,000 | 384,000 | 309,000 | 199,000 | 0 | 0 | 0 | - | - | - | - | - | - | - | - |
Other | ||||||||||||||||||||
-46 | 0 | 46 | -205 | 46 | 0 | 0 | 253 | 119 | 1,801 | 0 | 0 | 0 | - | - | - | - | - | - | - | - |
Proceeds from disposition of assets | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | - | 0 | 0 | 98 | - | 0 | 0 | 0 |
Proceeds from involuntary conversion of assets | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | - | 0 | 0 | 0 | - | - | - | - |
Net cash used for investing activities | ||||||||||||||||||||
70,914 | -57,707 | -52,797 | -45,979 | -183,743 | -51,812 | -74,420 | -184,401 | -189,422 | -203,229 | -204,797 | -173,243 | -241,974 | -299,481 | -347,103 | -304,106 | -270,638 | -231,185 | 0 | 0 | 0 |
Cash flows from financing activities | ||||||||||||||||||||
Net proceeds from private placement of common units | ||||||||||||||||||||
0 | - | - | 62,916 | 62,934 | 0 | 0 | 0 | 0 | - | - | - | - | - | - | - | - | - | - | - | - |
Proceeds from debt payable to Westlake | ||||||||||||||||||||
- | - | - | - | - | 3,648 | 13,648 | 148,521 | 151,905 | 165,257 | 155,257 | 100,727 | 169,656 | 212,175 | 265,686 | 234,846 | 321,037 | 291,709 | 0 | 0 | 0 |
Repayment of debt payable to Westlake | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | 285,926 | 273,219 | 27,785 | 12,975 | 1,552 | 0 | 0 | 0 | - | - | - | - |
Quarterly distributions to noncontrolling interest retained in OpCo by Westlake | ||||||||||||||||||||
313,280 | 315,564 | 312,324 | 322,896 | 332,247 | 341,888 | 339,276 | 338,302 | 345,463 | 343,932 | 319,334 | 273,412 | 258,557 | 244,590 | 261,569 | 291,307 | 301,215 | 310,842 | 0 | 0 | 0 |
Quarterly distributions to unitholders | ||||||||||||||||||||
64,718 | 62,084 | 59,301 | 56,369 | 54,249 | 53,363 | 52,403 | 49,421 | 45,710 | 42,117 | 38,675 | 37,340 | 36,081 | 34,937 | 33,876 | 32,887 | 31,967 | 31,074 | 0 | 0 | 0 |
Net cash provided by (used for) financing activities | ||||||||||||||||||||
-579,717 | -392,921 | -386,898 | -394,283 | -200,050 | -391,603 | -391,233 | -387,697 | -403,073 | -396,020 | -365,232 | -237,810 | -137,957 | -68,904 | -30,857 | -89,848 | -147,486 | -185,548 | 0 | 0 | 0 |
Net increase in cash and cash equivalents | ||||||||||||||||||||
-60,534 | 179 | 1,606 | -11,010 | 59,635 | -7,264 | -208 | -76,456 | -97,994 | -61,892 | -57,757 | -46,318 | -55,702 | -80,659 | -79,251 | 13,966 | 33,758 | 35,809 | 0 | 0 | 0 |