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Condensed Consolidating Financial Information - Cash Flows (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Condensed Consolidating Statements Of Cash Flows |  |  |  |
Net cash provided by (used for) operating activities |  | $ 531,905 | $ 856,556 | $ 1,781,911
Cash flows from investing activities: |  |  |  |
Purchases of investments |  | (24) | (9) | (319)
Sales and maturities of investments |  | 739 | 961 | 23,992
Proceeds from sales of unconsolidated affiliate |  |  |  | 750
Cash paid for acquisition of businesses, net of cash acquired |  | (22,278) | (80,187) | (72,534)
Investment in unconsolidated affiliates |  |  | (445) | (2,365)
Capital expenditures |  | (395,455) | (867,106) | (1,821,315)
Proceeds from sales of assets and insurance claims |  | 34,831 | 68,206 | 156,761
Other |  | 64 | 1,081 | (1,879)
Proceeds from merger transaction |  |  | 650,050 |
Net cash (used for) provided by investing activities |  | (382,123) | (227,449) | (1,716,909)
Cash flows from financing activities: |  |  |  |
Increase (decrease) in cash overdrafts |  | 3 | 645 | (6,151)
Proceeds from issuance of long-term debt |  | 600,000 |  |
Debt issuance costs |  | (11,520) | (1,847) |
Proceeds from revolving credit facilities |  | 611,500 |  | 465,000
Reduction in revolving credit facilities |  | (611,500) | (450,000) | (230,932)
Proceeds from (payments for) issuance of common shares |  | 967 | 1,296 | 30,263
Repurchase of common shares |  | (1,687) | (99,598) | (250,037)
Reduction of long-term debt |  | (493,612) | (27,478) | (46,800)
Dividends to shareholders | $ (17,100) | (50,924) | (69,363) | (59,145)
Proceeds from (payments for) commercial paper, net |  | (8,000) | (525,119) | 203,275
Proceeds from term Loan |  |  | 625,000 |
Payments on term loan |  | (162,500) | (300,000) |
Proceeds from (payments for) short-term borrowings |  | (6,211) | 318 |
Proceeds from parent contributions |  |  |  | 30,263
Other |  | (4,732) | (7,767) | (11,550)
Redemption of subsidiary Preferred Shares |  |  |  | (70,875)
Cash proceeds from noncontrolling Interest |  |  | 3,972 |
Net cash (used for) provided by financing activities |  | (138,216) | (849,941) | 69,848
Effect of exchange rate changes on cash and cash equivalents |  | (2,003) | (25,785) | (23,616)
Net increase (decrease) in cash and cash equivalents |  | 9,563 | (246,619) | 111,234
Cash and cash equivalents, beginning of period |  | 254,530 | 501,149 | 389,915
Cash and cash equivalents, end of period | 264,093 | 264,093 | 254,530 | 501,149
Reportable Legal Entities | Parent Company |  |  |  |
Condensed Consolidating Statements Of Cash Flows |  |  |  |
Net cash provided by (used for) operating activities |  | 58,406 | 39,478 | 26,943
Cash flows from investing activities: |  |  |  |
Proceeds from merger transaction |  |  | 5,500 |
Net cash (used for) provided by investing activities |  |  | 5,500 |
Cash flows from financing activities: |  |  |  |
Proceeds from (payments for) issuance of common shares |  | 967 | 1,296 | 16,424
Dividends to shareholders |  | (59,866) | (79,304) | (65,450)
Proceeds from parent contributions |  |  |  | 30,263
Proceeds from issuance of intercompany debt |  | 45,500 |  |
Paydown of intercompany debt |  | (40,000) | (27,000) | (55,000)
Other |  | (4,732) | (7,767) | (7,740)
Proceeds (issuance) of intercompany debt |  |  | 67,500 | 55,000
Net cash (used for) provided by financing activities |  | (58,131) | (45,275) | (26,503)
Net increase (decrease) in cash and cash equivalents |  | 275 | (297) | 440
Cash and cash equivalents, beginning of period |  | 873 | 1,170 | 730
Cash and cash equivalents, end of period | 1,148 | 1,148 | 873 | 1,170
Reportable Legal Entities | Guarantor Subsidiaries |  |  |  |
Condensed Consolidating Statements Of Cash Flows |  |  |  |
Net cash provided by (used for) operating activities |  | (233,738) | (217,685) | (71,982)
Cash flows from investing activities: |  |  |  |
Investment in unconsolidated affiliates |  | (86,459) |  |
Change in intercompany balances |  | 103,384 | 135,518 | (418,315)
Proceeds from merger transaction |  |  | 646,078 |
Net cash (used for) provided by investing activities |  | 16,925 | 781,596 | (418,315)
Cash flows from financing activities: |  |  |  |
Proceeds from issuance of long-term debt |  | 600,000 |  |
Debt issuance costs |  | (11,520) | (1,847) |
Proceeds from revolving credit facilities |  | 610,000 |  | 450,000
Reduction in revolving credit facilities |  | (610,000) | (450,000) | (170,000)
Reduction of long-term debt |  | (350,000) |  |
Proceeds from (payments for) commercial paper, net |  | (8,000) | (525,119) | 203,275
Proceeds from term Loan |  |  | 625,000 |
Payments on term loan |  | (162,500) | (300,000) |
Proceeds from parent contributions |  | (159,000) |  |
Proceeds (issuance) of intercompany debt |  |  | 88,058 |
Net cash (used for) provided by financing activities |  | 226,980 | (563,908) | 483,275
Net increase (decrease) in cash and cash equivalents |  | 10,167 | 3 | (7,022)
Cash and cash equivalents, beginning of period |  | 10 | 7 | 7,029
Cash and cash equivalents, end of period | 10,177 | 10,177 | 10 | 7
Reportable Legal Entities | Other Subsidiaries (Non-Guarantors) |  |  |  |
Condensed Consolidating Statements Of Cash Flows |  |  |  |
Net cash provided by (used for) operating activities |  | 757,660 | 1,066,026 | 1,816,831
Cash flows from investing activities: |  |  |  |
Purchases of investments |  | (24) | (9) | (319)
Sales and maturities of investments |  | 739 | 961 | 23,992
Proceeds from sales of unconsolidated affiliate |  |  |  | 750
Cash paid for acquisition of businesses, net of cash acquired |  | (22,278) | (80,187) | (72,534)
Investment in unconsolidated affiliates |  | (159,000) | (445) | (2,365)
Capital expenditures |  | (395,455) | (867,106) | (1,821,315)
Proceeds from sales of assets and insurance claims |  | 34,831 | 68,206 | 156,761
Change in intercompany balances |  | (103,384) | (135,518) | 418,315
Other |  | 64 | 1,081 | (1,879)
Proceeds from merger transaction |  |  | (1,528) |
Net cash (used for) provided by investing activities |  | (644,507) | (1,014,545) | (1,298,594)
Cash flows from financing activities: |  |  |  |
Increase (decrease) in cash overdrafts |  | 3 | 645 | (6,151)
Proceeds from revolving credit facilities |  | 1,500 |  | 15,000
Reduction in revolving credit facilities |  | (1,500) |  | (60,932)
Repurchase of common shares |  | (1,687) | (99,598) | (250,037)
Reduction of long-term debt |  | (143,612) | (27,478) |
Proceeds from (payments for) short-term borrowings |  | (6,211) | 318 |
Proceeds from parent contributions |  | (86,458) |  |
Proceeds from issuance of intercompany debt |  | (45,500) |  |
Paydown of intercompany debt |  | 40,000 | 27,000 | 55,000
Payments on parent (Equity or N/P) |  | (41,480) | (21,322) |
Other |  |  |  | (3,810)
Proceeds (issuance) of intercompany debt |  |  | (155,558) | (55,000)
Redemption of subsidiary Preferred Shares |  |  |  | (70,875)
Cash proceeds from noncontrolling Interest |  |  | 3,972 |
Net cash (used for) provided by financing activities |  | (112,029) | (272,021) | (376,805)
Effect of exchange rate changes on cash and cash equivalents |  | (2,003) | (25,785) | (23,616)
Net increase (decrease) in cash and cash equivalents |  | (879) | (246,325) | 117,816
Cash and cash equivalents, beginning of period |  | 253,647 | 499,972 | 382,156
Cash and cash equivalents, end of period | $ 252,768 | 252,768 | 253,647 | 499,972
Consolidating Adjustments |  |  |  |
Condensed Consolidating Statements Of Cash Flows |  |  |  |
Net cash provided by (used for) operating activities |  | (50,423) | (31,263) | 10,119
Cash flows from investing activities: |  |  |  |
Investment in unconsolidated affiliates |  | 245,459 |  |
Net cash (used for) provided by investing activities |  | 245,459 |  |
Cash flows from financing activities: |  |  |  |
Proceeds from (payments for) issuance of common shares |  |  |  | (16,424)
Dividends to shareholders |  | 8,942 | 9,941 | 6,305
Proceeds from parent contributions |  | 245,458 |  |
Payments on parent (Equity or N/P) |  | 41,480 | 21,322 |
Net cash (used for) provided by financing activities |  | $ (195,036) | $ 31,263 | $ (10,119)

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- Definition The cash inflow from the additional capital contribution to the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585 + Details
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- Definition The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition Amount of cash inflow from a noncontrolling interest. Includes, but is not limited to, purchase of additional shares or other increase in noncontrolling interest ownership. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585 + Details
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- Definition Amount of cash inflow (outflow) from financing activities classified as other. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3095-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3098-108585 + Details
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- Definition The net cash inflow or outflow from the excess drawing from an existing cash balance, which will be honored by the bank but reflected as a loan to the drawer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3095-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 9 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3098-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition The net cash inflow or cash outflow from issuing (borrowing) and repaying commercial paper. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 9 -Subparagraph c -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3098-108585 + Details
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- Definition The cash inflow from a borrowing having initial term of repayment within one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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