Retirement Plan 1 (Details) (USD $)	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Retirement Plans and Postretirement Medical Benefits Details [Abstract]
Special pension plan contributions		$ 123,000,000	$ 0	$ 125,000,000
Defined Benefit Plan Change In Benefit Obligation [Roll Forward]
Less federal susidy on benefits paid		0	9,070,000	0
Benefits paid			22,100,000
Change In Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year		450,683,000
Less federal susidy on benefits paid		0	9,070,000	0
Benefits paid			22,100,000
Fair value of plan assets at end of year		1,426,536,000	450,683,000
Funded status, end of year [Abstract]
Fair value of plan assets at end of year		1,426,536,000	450,683,000
Pension plans with an accumulated benefit obligation in excess of plan assets [Abstract]
Net Periodic Benefit Cost Charged To Restructuring Reserve		5,000,000	17,000,000
Amounts recognized in the Consolidated Balance Sheets [Abstract]
Current liability		(28,855,000)	(29,374,000)
Non-current liability		(256,973,000)	(251,012,000)
Net amount recognized		(285,828,000)	(280,386,000)
Pre-tax amounts recognized in accumulated other comprehensive income (AOCI) [Abstract]
Net actuarial loss		115,713,000	102,910,000
Prior service cost/(credit)		(5,696,000)	(5,886,000)
Total		110,017,000	97,024,000
The estimated amounts that will be amortized from AOCI into net periodic benefits cost [Abstract]
Net actuarial loss		9,456,000
Prior service cost/(credit)		(2,092,000)
Total		7,364,000
Defined Benefit Plan Effect Of One Percentage Point Change In Assumed Health Care Cost Trend Rates Abstract
Effect on total of service and interest cost components (Increase)		615,000
Effect on total of service and interest cost components (Decrease)		(520,000)
Effect on postretirement benefit obligations (Increase)		10,208,000
Effect on postretirement benefit obligations (Decrease)		(8,859,000)
United States Pension Plans Of US Entity Defined Benefit Member
Retirement Plans and Postretirement Medical Benefits Details [Abstract]
US defined Benefit contriubution plans	85,000,000	130,983,000	20,047,000
Defined Benefit Plan Change In Benefit Obligation [Roll Forward]
Benefit obligation at beginning of year	1,707,390,000	1,632,286,000	1,599,506,000
Service cost		19,450,000	23,157,000	24,274,000
Interest cost		87,738,000	89,602,000	93,997,000
Plan participants contributions		0	0
Actuarial loss (gain)		94,495,000	39,971,000
Foreign currency changes		0	0
Settlement / curtailment		2,941,000	6,419,000
Special termination benefits		1,489,000	8,148,000
Benefits paid		131,009,000	134,517,000
Benefit obligation at end of year		1,707,390,000	1,632,286,000	1,599,506,000
Change In Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year		1,385,174,000	1,350,045,000
Actual return on plan assets		41,388,000	149,599,000
Company contributions	85,000,000	130,983,000	20,047,000
Plan participants contributions		0	0
Benefits paid		131,009,000	134,517,000
Fair value of plan assets at end of year			1,385,174,000	1,350,045,000
Funded status, end of year [Abstract]
Fair value of plan assets at end of year			1,385,174,000	1,350,045,000
Benefit obligation at end of year		1,707,390,000	1,632,286,000	1,599,506,000
Funded status		(280,854,000)	(247,112,000)
Pension plans with an accumulated benefit obligation in excess of plan assets [Abstract]
Projected benefit obligation		1,705,732,000	1,630,712,000
Accumulated benefit obligation		1,682,392,000	1,601,746,000
Fair value of plan assets		1,424,837,000	1,383,571,000
Amounts recognized in the Consolidated Balance Sheets [Abstract]
Non-current asset		40,000	29,000
Current liability		(11,323,000)	(6,962,000)
Non-current liability		(269,571,000)	(240,179,000)
Net amount recognized		(280,854,000)	(247,112,000)
Pre-tax amounts recognized in accumulated other comprehensive income (AOCI) [Abstract]
Net actuarial loss		858,531,000	719,890,000
Prior service cost/(credit)		2,159,000	2,400,000
Total		860,690,000	722,290,000
The estimated amounts that will be amortized from AOCI into net periodic benefits cost [Abstract]
Net actuarial loss		53,256,000
Prior service cost/(credit)		816,000
Transition obligation		0
Total		54,072,000
Weighted average assumptions used to determine end of year benefit obligations [Abstract]
Discount rate		4.95%	5.60%	5.75%
Rate of compensation increase		3.50%	3.50%	3.50%
Pension And Other Postretirement Benefit Contributions Abstract
Estimated Contributions to pension plans		15,000,000
The components of the net periodic benefit cost for defined pension plans [Abstract]
Service cost		19,450,000	23,157,000	24,274,000
Interest cost		87,738,000	89,602,000	93,997,000
Expected return on plan assets		(123,058,000)	(123,095,000)	(120,662,000)
Amortization of transition cost		0	0	0
Amortization of prior service cost		147,000	(2,575,000)	(2,547,000)
Recognized net actuarial loss		37,522,000	32,343,000	26,063,000
Special termination		1,489,000	8,148,000	112,000
Settlement / curtailment		3,036,000	10,712,000	4,107,000
Net periodic benefit cost		26,324,000	38,292,000	25,344,000
Other changes in plan assets and benefit obligations for defined benefit pension plans recognized in other comprehensive income [Abstract]
Curtailments effects and settlements		(95,000)	(4,290,000)
Net actuarial loss (gain)		176,164,000	13,467,000
Prior service cost (credit)		0	0
Amortization of net actuarial (loss) gain		(37,522,000)	(32,343,000)
Amortization of prior service (cost) credit		(147,000)	2,575,000
Total recognized in other comprehensive income		138,400,000	(20,591,000)
Weighted average assumptions used to determine net periodic benefit costs [Abstract]
Discount rate		5.60%	5.75%	6.05%
Expected return on plan assets		8.00%	8.00%	8.00%
Rate of compensation increase		3.50%	3.50%	4.25%
Investment Strategy and Asset Allocation [Abstract]
Nominal Rate of Return on Pension Plan		7.75%
Foreign Pension Plans, Defined Benefit [Member]
Retirement Plans and Postretirement Medical Benefits Details [Abstract]
US defined Benefit contriubution plans	10,000,000	18,616,000	9,291,000
Defined Benefit Plan Change In Benefit Obligation [Roll Forward]
Benefit obligation at beginning of year	581,904,000	541,241,000	507,932,000
Service cost		7,310,000	6,907,000	6,853,000
Interest cost		28,329,000	27,507,000	25,200,000
Plan participants contributions		1,868,000	1,962,000
Actuarial loss (gain)		30,648,000	27,129,000
Foreign currency changes		(6,424,000)	(5,257,000)
Settlement / curtailment		16,000	(3,396,000)
Special termination benefits		277,000	557,000
Benefits paid		21,361,000	22,100,000
Benefit obligation at end of year		581,904,000	541,241,000	507,932,000
Change In Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year	438,848,000	450,683,000	414,313,000
Actual return on plan assets		(7,478,000)	50,609,000
Company contributions	10,000,000	18,616,000	9,291,000
Plan participants contributions		1,868,000	1,962,000
Foreign Currency Changes		(3,480,000)	(3,392,000)
Benefits paid		21,361,000	22,100,000
Fair value of plan assets at end of year		438,848,000	450,683,000	414,313,000
Funded status, end of year [Abstract]
Fair value of plan assets at end of year		438,848,000	450,683,000	414,313,000
Benefit obligation at end of year		581,904,000	541,241,000	507,932,000
Funded status		(143,056,000)	(90,558,000)
Pension plans with an accumulated benefit obligation in excess of plan assets [Abstract]
Projected benefit obligation		579,646,000	538,637,000
Accumulated benefit obligation		541,723,000	502,317,000
Fair value of plan assets		435,702,000	447,569,000
Amounts recognized in the Consolidated Balance Sheets [Abstract]
Non-current asset		888,000	508,000
Current liability		(852,000)	(901,000)
Non-current liability		(143,092,000)	(90,165,000)
Net amount recognized		(143,056,000)	(90,558,000)
Pre-tax amounts recognized in accumulated other comprehensive income (AOCI) [Abstract]
Net actuarial loss		224,731,000	168,376,000
Prior service cost/(credit)		541,000	541,000
Transition obligation (asset)		(273,000)	(282,000)
Total		224,999,000	168,635,000
The estimated amounts that will be amortized from AOCI into net periodic benefits cost [Abstract]
Net actuarial loss		13,700,000
Prior service cost/(credit)		99,000
Transition obligation		(9,000)
Total		13,790,000
Pension And Other Postretirement Benefit Contributions Abstract
Estimated Contributions to pension plans		20,000,000
The components of the net periodic benefit cost for defined pension plans [Abstract]
Service cost		7,310,000	6,907,000	6,853,000
Interest cost		28,329,000	27,507,000	25,200,000
Expected return on plan assets		(31,784,000)	(28,838,000)	(27,193,000)
Amortization of transition cost		(10,000)	(9,000)	(61,000)
Amortization of prior service cost		170,000	214,000	446,000
Recognized net actuarial loss		11,135,000	10,205,000	2,486,000
Special termination		277,000	291,000	2,385,000
Settlement / curtailment		274,000	1,285,000	202,000
Net periodic benefit cost		15,701,000	17,562,000	10,318,000
Other changes in plan assets and benefit obligations for defined benefit pension plans recognized in other comprehensive income [Abstract]
Curtailments effects and settlements		(274,000)	(464,000)
Net actuarial loss (gain)		67,934,000	5,748,000
Prior service cost (credit)		0	(3,790,000)
Amortization of net actuarial (loss) gain		(11,135,000)	5,440,000
Amortization of prior service (cost) credit		(170,000)	(214,000)
Net transitional obligation (asset)		9,000	(86,000)
Total recognized in other comprehensive income		56,364,000	6,634,000
Weighted average assumptions used to determine net periodic benefit costs [Abstract]
Discount rate range		2.00% - 5.50% 1.80% - 6.10%	2.25% - 6.00% 2.25% - 5.50%	2.25% - 6.60% 2.25% - 6.00%
Expected return on plan assets range		4.00% - 7.75%	4.50% - 7.75%	4.49% - 7.75%
Rate of compensation increase range		2.10% - 5.50% 2.10% - 4.60%	2.50% - 5.60% 2.50% - 5.50%	2.50% - 5.10% 2.50% - 5.60%
Investment Strategy and Asset Allocation [Abstract]
Nominal Rate of Return on Pension Plan		7.25%
Canada Pension Plans Defined Benefit [Member]
Weighted average assumptions used to determine end of year benefit obligations [Abstract]
Discount rate		4.15%	5.15%	5.85%
Weighted average assumptions used to determine net periodic benefit costs [Abstract]
Discount rate		5.15%	5.85%	6.60%
Nonpension Postretirement Benefit Plan [Member]
Retirement Plans and Postretirement Medical Benefits Details [Abstract]
US defined Benefit contriubution plans		35,103,000	34,381,000
Defined Benefit Plan Change In Benefit Obligation [Roll Forward]
Benefit obligation at beginning of year		280,386,000	254,405,000
Service cost		3,328,000	3,724,000	3,424,000
Interest cost		13,528,000	13,828,000	14,437,000
Plan participants contributions		8,861,000	9,182,000
Actuarial loss (gain)		20,792,000	33,983,000
Foreign currency changes		(648,000)	1,061,000
Gross Benefits Paid Postretirement		43,964,000	43,563,000
Settlement / curtailment		3,245,000	7,575,000
Special termination benefits		300,000	191,000
Benefit obligation at end of year		285,828,000	280,386,000	254,405,000
Change In Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year		0	0
Company contributions		35,103,000	34,381,000
Plan participants contributions		8,861,000	9,182,000
Gross Benefits Paid Postretirement		43,964,000	43,563,000
Fair value of plan assets at end of year		0	0	0
Funded status, end of year [Abstract]
Fair value of plan assets at end of year		0	0	0
Benefit obligation at end of year		285,828,000	280,386,000	254,405,000
Funded status		(285,828,000)	(280,386,000)
Pension plans with an accumulated benefit obligation in excess of plan assets [Abstract]
Net Periodic Benefit Cost Charged To Restructuring Reserve		3,000,000	7,000,000
The components of the net periodic benefit cost for defined pension plans [Abstract]
Service cost		3,328,000	3,724,000	3,424,000
Interest cost		13,528,000	13,828,000	14,437,000
Amortization of transition cost			2,511,000	2,475,000
Amortization of prior service cost		2,504,000
Recognized net actuarial loss		7,666,000	6,793,000	4,092,000
Special termination		300,000	191,000
Settlement / curtailment		2,839,000	6,954,000
Net periodic benefit cost		25,157,000	28,979,000	19,478,000
Other changes in plan assets and benefit obligations for defined benefit pension plans recognized in other comprehensive income [Abstract]
Curtailments effects and settlements		308,000	621,000
Net actuarial loss (gain)		22,201,000	34,059,000
Prior service cost (credit)		0	0
Amortization of net actuarial (loss) gain		(9,980,000)	(6,793,000)
Amortization of prior service (cost) credit		2,504,000	2,511,000
Adjustment For Actual Medicare Premium		(2,040,000)	979,000
Total recognized in other comprehensive income		12,993,000	31,377,000
UK Plan [Member]
Pension plans with an accumulated benefit obligation in excess of plan assets [Abstract]
Fair value of plan assets		326,000,000	338,000,000
Weighted average assumptions used to determine net periodic benefit costs [Abstract]
Expected return on plan assets		7.25%	7.25%
US Nonpension Plan [Member]
Defined Benefit Plan Change In Benefit Obligation [Roll Forward]
Benefit obligation at end of year		262,000,000	259,000,000
Funded status, end of year [Abstract]
Benefit obligation at end of year		$ 262,000,000	$ 259,000,000

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Disount rate range to determine end of year obligations

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The amount of decrease that is related to an event that significantly reduces the expected years of future service of present employees or eliminates for a significant number of employees the accrual of defined benefits for some or all of their future services. Also includes the amount of decrease that relates to an irrevocable action that relieves the employer (or the plan) of primary responsibility for a benefit obligation and eliminates significant risks related to the obligation and the assets used to effect the settlement. Examples of transactions that constitute a settlement include (a) making lump-sum cash payments to plan participants in exchange for their rights to receive specified benefits and (b) purchasing nonparticipating annuity contracts.

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Gross benefits paid for nonpesion psotretirement benefit plans.

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The pretax total of net gain (loss), prior service cost (credit), and transition assets (obligations), as well as minimum pension liability if still remaining, included in accumulated other comprehensive income associated with a defined benefit pension or other postretirement plan(s) because they have yet to be recognized as components of net periodic benefit cost.

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The pretax net amount of gains and losses that are not yet recognized as a component of net periodic benefit cost, and that are recognized as increases or decreases in other comprehensive income as they arise. Gains and losses are due to changes in the value of either the benefit obligation or the plan assets resulting from experience different from that assumed or from a change in an actuarial assumption, or the consequence of a decision to temporarily deviate from the substantive plan.

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Amount related to the pretax cost of benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation, which has not yet been recognized as components of net periodic benefit cost.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 87

-Paragraph 264

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

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-Paragraph 5

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

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-URI http://asc.fasb.org/extlink&oid=6521920

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Reference 5: http://www.xbrl.org/2003/role/presentationRef

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-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph 7

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph 518

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Of the original amount of transition assets as of the date FAS 87 or 106 was initially applied, (a) the fair value of plan assets plus any recognized accrued pension or other postretirement benefit cost or less any recognized prepaid pension or other postretirement benefit cost in excess of (b) the benefit obligation, the portion of which has yet to be recognized as components of net periodic benefit cost. Of the original amount of transition obligations as of the date FAS 87 or 106 was initially applied, (a) the benefit obligation in excess of (b) the fair value of plan assets plus any recognized accrued pension or other postretirement benefit cost or less any recognized prepaid pension or other postretirement benefit cost, the portion of which has yet to be recognized as components of net periodic benefit cost. This amount is pretax.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph ii

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-URI http://asc.fasb.org/extlink&oid=6749452

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-Name Statement of Financial Accounting Standard (FAS)

-Number 158

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Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph 518

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The difference between fair value of plan assets at the end of the period and the fair value at the beginning of the period, adjusted for contributions and payments of benefits during the period, and after adjusting for taxes and other expenses, as applicable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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The net increase or decrease of changes in the value of either the benefit obligation or the plan assets resulting from experience different from that assumed or from a change in an actuarial assumption, or the consequence of a decision to temporarily deviate from the substantive plan.

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The amounts in accumulated other comprehensive income related to transition assets (obligations), origination from the adoption of FAS 87 and 106, expected to be recognized as components of net periodic benefit cost over the next fiscal year that follows the most recent annual statement of financial position presented.

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The interest rate used to adjust for the time value of money for the plan.

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Expected rate of compensation increases (for pay-related plans).

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Expected rate of compensation increases (for pay-related plans).

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1) For defined benefit pension plans, the benefit obligation is the projected benefit obligation, which is the actuarial present value as of a date of all benefits attributed by the pension benefit formula to employee service rendered prior to that date. 2) For other postretirement defined benefit plans, the benefit obligation is the accumulated postretirement benefit obligation, which is the actuarial present value of benefits attributed to employee service rendered to a particular date.

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The amount of payments made for which participants are entitled under a pension plan, including pension benefits, death benefits, and benefits due on termination of employment. Also includes payments made under a postretirement benefit plan, including prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. This item represents a periodic decrease to the plan obligations and a decrease to plan assets.

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The increase in the fair value of plan assets from contributions made by the employer.

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The amount of contributions made by plan participants. This item represents a periodic increase to the plan obligation and an increase to plan assets.

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The effect of a one-percentage-point decrease in the assumed health care cost trend rates on the accumulated postretirement benefit obligation for health care benefits.

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The effect of a one-percentage- point decrease in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs.

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The effect of a one-percentage-point increase in the assumed health care cost trend rates on the accumulated postretirement benefit obligation for health care benefits.

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The effect of a one-percentage-point increase in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs.

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The employer's best estimate, as soon as it can be reasonably determined, of contributions expected to be paid to the plan during the next fiscal year beginning after the date of the latest statement of financial position. Estimated contributions may be presented in the aggregate combining (1) contributions required by funding regulations or laws, (2) discretionary contributions, and (3) noncash contributions.

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An amount calculated as a basis for determining the extent of delayed recognition of the effects of changes in the fair value of assets. The expected return on plan assets is determined based on the expected long-term rate of return on plan assets and the market-related value of plan assets.

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Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

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The amount of increase or decrease in the benefit obligation attributed to foreign currency changes. The effects of foreign currency exchange rate changes that are to be disclosed are those applicable to plans of a foreign operation whose functional currency is not the reporting currency.

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The amount of increase or decrease in plan assets attributed to foreign currency changes. The effects of foreign currency exchange rate changes that are to be disclosed are those applicable to plans of a foreign operation whose functional currency is not the reporting currency.

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The funded status is measured as the difference between the fair value of plan assets and the benefit obligation. Will normally be the same as the net Defined Benefit Plan, Amounts Recognized in Balance Sheet, Total.

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The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time.

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The total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments.

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This element may be used to encapsulate any other periodic costs associated with defined benefit plans that are not separately disclosed.

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No definition available.

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If aggregate disclosures are presented, the aggregate pension accumulated benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

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