Segment Information Net Sales by Major Product (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2015 |
Sep. 25, 2015 |
Jun. 26, 2015 |
Mar. 27, 2015 |
Dec. 31, 2014 |
Sep. 26, 2014 |
Jun. 27, 2014 |
Mar. 28, 2014 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
||||||
| Net sales | $ 1,061,464 | $ 969,144 | $ 1,025,375 | $ 911,070 | $ 1,206,356 | $ 1,164,453 | $ 1,199,336 | $ 1,054,331 | $ 3,967,053 | [1] | $ 4,624,476 | [1] | $ 4,207,209 | [1] | ||
| Gas Handling [Member] | ||||||||||||||||
| Net sales | 1,449,115 | 1,676,180 | 1,440,731 | |||||||||||||
| Fluid Handling [Member] | ||||||||||||||||
| Net sales | 532,701 | 653,418 | 663,317 | |||||||||||||
| Welding and Cutting [Member] | ||||||||||||||||
| Net sales | $ 1,985,237 | $ 2,294,878 | $ 2,103,161 | |||||||||||||
| ||||||||||||||||