CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Cash Flows from Operating Activities:
Net income	$ 34.0	$ 92.0	$ 44.0
Adjustments to reconcile net income to net cash provided by operations:
Depreciation and amortization	109	107	105
Deferred income taxes	(5)	5	1
Gains on asset transactions, net of impairment losses	(34)	(51)	(51)
Gain from receipt of insurance proceeds	0	(1)	0
Gain on consolidation of HS&TC	0	0	(5)
Share-based expense	8	8	9
Equity in income (loss) of affiliates, net of distributions	5	(8)	(1)
Changes in operating assets and liabilities:
Accounts and notes receivable	(13)	8	(16)
Inventories	(6)	6	(6)
Prepaid expenses and other assets	(4)	(18)	(5)
Deferred dry-docking costs	(13)	9	10
Liability for employee benefit plans	11	15	0
Accounts and income taxes payable	14	9	20
Other liabilities	(12)	(15)	11
Real estate developments held for sale:
Real estate inventory sales	6	6	5
Expenditures for real estate inventory	(14)	(22)	(6)
Net cash provided by operations	86	150	115
Cash Flows from Investing Activities:
Capital expenditures for property and developments	(67)	(95)	(31)
Proceeds from disposal of income-producing property, investments and other assets	16	34	32
Deposits into Capital Construction Fund	(4)	(4)	(4)
Withdrawals from Capital Construction Fund	4	4	4
Acquisition of businesses, net of cash acquired	0	0	10
Payments for purchases of investments	(28)	(102)	(48)
Proceeds from investments	8	13	6
Net cash used in investing activities	(71)	(150)	(31)
Cash Flows from Financing Activities:
Proceeds from issuance of debt	256	245	241
Payments of debt and deferred financing costs	(215)	(198)	(288)
Proceeds from (payments on) line-of-credit agreement, net	(5)	(4)	13
Proceeds from issuance of capital stock and other	10	7	(1)
Dividends paid	(53)	(52)	(52)
Net cash used in financing activities	(7)	(2)	(87)
Cash and Cash Equivalents:
Net increase (decrease) for the year	8	(2)	(3)
Balance, beginning of year	14	16	19
Balance, end of year	22	14	16
Other Cash Flow Information:
Interest paid, net of amounts capitalized	(24)	(25)	(24)
Income taxes paid	(25)	(46)	(38)
Non-cash Activities:
Debt assumed in real estate purchase	0	8	0
Real estate received in settlement of a mortgage note	0	8	0
Capital expenditures included in accounts payable and accrued expenses	11	7	5
Tax-deferred property sales	45	120	109
Tax-deferred property purchases	$ (39)	$ (148)	$ (95)