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SEGMENT INFORMATION - Summary of Segment Results (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016 | Dec. 31, 2016
Summarized Information |  |  |  |  |
Sales | $ 2,635,999 | $ 2,596,288 | $ 7,792,397 | $ 7,666,494 |
Total consolidated operating earnings | 281,170 | 322,587 | 808,723 | 945,269 |
Total assets | 5,825,060 |  | 5,825,060 |  | $ 5,694,307
UNITED STATES [Member] |  |  |  |  |
Summarized Information |  |  |  |  |
Sales | 1,912,301 | 1,936,075 | 5,671,318 | 5,715,943 |
Total assets | 2,316,683 |  | 2,316,683 |  | 2,275,009
CANADA [Member] |  |  |  |  |
Summarized Information |  |  |  |  |
Sales | 188,203 | 179,258 | 563,455 | 552,361 |
Total assets | 298,553 |  | 298,553 |  | 286,035
Other Businesses [Member] |  |  |  |  |
Summarized Information |  |  |  |  |
Sales | 535,495 | 480,955 | 1,557,624 | 1,398,190 |
Total assets | 589,564 |  | 589,564 |  | 494,067
Segment Balances Before Intersegment Eliminations and Consolidation Reconciling Items [Member] |  |  |  |  |
Summarized Information |  |  |  |  |
Sales | 2,741,111 | 2,689,445 | 8,092,929 | 7,926,943 |
Total consolidated operating earnings | 309,775 | 352,241 | 907,363 | 1,044,454 |
Total assets | 3,204,800 |  | 3,204,800 |  | $ 3,055,111
Segment Balances Before Intersegment Eliminations and Consolidation Reconciling Items [Member] | UNITED STATES [Member] |  |  |  |  |
Summarized Information |  |  |  |  |
Sales | 2,015,968 | 2,028,235 | 5,968,565 | 5,973,044 |
Total consolidated operating earnings | 297,855 | 342,524 | 922,614 | 1,023,318 |
Segment Balances Before Intersegment Eliminations and Consolidation Reconciling Items [Member] | CANADA [Member] |  |  |  |  |
Summarized Information |  |  |  |  |
Sales | 188,216 | 179,281 | 563,470 | 552,470 |
Total consolidated operating earnings | (14,972) | (15,118) | (59,428) | (55,207) |
Segment Balances Before Intersegment Eliminations and Consolidation Reconciling Items [Member] | Other Businesses [Member] |  |  |  |  |
Summarized Information |  |  |  |  |
Sales | 536,927 | 481,929 | 1,560,894 | 1,401,429 |
Total consolidated operating earnings | 26,892 | 24,835 | 44,177 | 76,343 |
Intersegment Eliminations [Member] |  |  |  |  |
Summarized Information |  |  |  |  |
Sales | (105,112) | (93,157) | (300,532) | (260,449) |
Intersegment Eliminations [Member] | UNITED STATES [Member] |  |  |  |  |
Summarized Information |  |  |  |  |
Sales | (103,667) | (92,160) | (297,247) | (257,101) |
Intersegment Eliminations [Member] | CANADA [Member] |  |  |  |  |
Summarized Information |  |  |  |  |
Sales | (13) | (23) | (15) | (109) |
Intersegment Eliminations [Member] | Other Businesses [Member] |  |  |  |  |
Summarized Information |  |  |  |  |
Sales | $ (1,432) | $ (974) | $ (3,270) | $ (3,239) |

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