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Consolidation and Nature of Operations (Details) - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2019 | Jun. 30, 2018
Cash paid during the period for: |  |
Income taxes, net of refunds | $ 10,788 | $ 10,032
Interest, net of amounts capitalized | 114,717 | 104,249
Significant non-cash investing and financing activities: |  |
Accrued capital expenditures | 108,056 | 65,995
Right-of-use operating lease assets obtained in exchange for operating lease liabilities | 4,562 | 0
Dividends accrued but not yet paid | 82,824 | 77,821
APS |  |
Cash paid during the period for: |  |
Income taxes, net of refunds | 35,573 | 24,689
Interest, net of amounts capitalized | 107,169 | 98,478
Significant non-cash investing and financing activities: |  |
Accrued capital expenditures | 108,056 | 65,995
Right-of-use operating lease assets obtained in exchange for operating lease liabilities | 4,562 | 0
Dividends accrued but not yet paid | $ 82,800 | $ 77,800

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