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Employee Benefits | 12 Months Ended
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Dec. 31, 2017
Postemployment Benefits [Abstract] |
Employee Benefits | Employee Benefits We sponsor defined contribution 401(k) plans that cover substantially all full-time salaried and hourly employees of our company and its subsidiaries. Eligible employees are permitted to contribute up to the maximum amount allowed by law. We generally match up to the first 4% of compensation contributed by employees. Expense recognized in connection with our contributions to the 401(k) plans totaled $43 million, $36 million, and $27 million in the years ended December 31, 2017, 2016, and 2015, respectively. We also have a nonqualified deferred compensation plan for certain key employees. Under this plan, eligible participants may defer up to 100% of their base salary and 100% of their bonus to provide tax-deferred growth for retirement. The funds deferred are invested in corporate-owned life insurance, under a rabbi trust.

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- Definition The entire disclosure for an entity's employee compensation and benefit plans, including, but not limited to, postemployment and postretirement benefit plans, defined benefit pension plans, defined contribution plans, non-qualified and supplemental benefit plans, deferred compensation, share-based compensation, life insurance, severance, health care, unemployment and other benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 712 -URI http://asc.fasb.org/topic&trid=2197446 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -URI http://asc.fasb.org/topic&trid=2127225 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI http://asc.fasb.org/topic&trid=2228938 + Details
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- References No definition available. + Details
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