Accrued Expenses and Other Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Accrued Expenses and Other Liabilities
Salaries and wages, Current	$ 69,064	$ 106,281
Salaries and wages, Non-Current	0	0
Salaries and wages, Total	69,064	106,281
Deferred compensation, Accrued Expenses	2,790	2,505
Deferred compensation, Non-Current Liabilities	32,097	31,896
Deferred compensation, Total	34,887	34,401
Other Employee Benefits, Current	4,646	3,809
Other Employee Benefits, Non-current	4,200	6,712
Other Employee Benefits, Total	8,846	10,521
Pension benefits, Accrued Expenses	3,582	3,660
Pension benefits, Non-Current Liabilities	293,074	292,155
Pension benefits, Total	296,656	295,815
Other postretirement benefits, Accrued Expenses	2,405	2,414
Other postretirement benefits, Non-Current Liabilities	28,200	28,374
Other postretirement benefits, Total	30,605	30,788
Insurance Obligations, Accrued Expenses	130,734	125,835
Insurance obligations, Non-Current Liabilities	187,307	186,700
Insurance obligations, primarily self-insurance, Total	318,041	312,535
Accrued rent, Accrued Expenses	7,198	4,373
Accrued rent, Non-Current Liabilities	2,721	3,372
Accrued rent, Total	9,919	7,745
Accrued Environmental Liabilities Current	4,416	4,515
Accrued Environmental Liabilities Noncurrent	8,853	8,548
Environmental liabilities, Total	13,269	13,063
Asset retirement obligations, Accrued Expenses	5,851	6,144
Asset retirement obligations, Non-Current Liabilities	19,834	19,403
Asset retirement obligations, Total	25,685	25,547
Operating taxes, Accrued Expenses	100,519	94,188
Operating taxes, Non-Current Liabilities	0	0
Operating taxes, Total	100,519	94,188
Accrued Income Taxes, Current	2,566	2,623
Accrued Income Tax Non current	24,682	23,813
Income taxes, Total	27,248	26,436
Interest, Accrued Expenses	25,600	33,654
Interest, Non-Current Liabilities	0	0
Interest, Total	25,600	33,654
Customer Deposits, Current	56,156	55,854
Customer Deposits, Noncurrent	6,240	6,239
Deposits, mainly from customers, Total	62,396	62,093
Deferred revenue, Accrued Expenses	15,013	15,123
Deferred revenue, Non-Current Liabilities	0	0
Deferred Revenue	15,013	15,123
Other, Accrued Expenses	35,457	35,359
Other, Non-Current Liabilities	10,073	9,093
Other, Total	45,530	44,452
Total Accrued Expenses	465,997	496,337
Total, Non-Current Liabilities	617,281	616,305
Total	$ 1,083,278	$ 1,112,642