Debt (Details) $ in Thousands, £ in Billions	1 Months Ended			3 Months Ended	6 Months Ended
	Jun. 30, 2015 USD ($)	Mar. 31, 2015	Feb. 28, 2015 USD ($)	Mar. 31, 2015 USD ($)	Jun. 30, 2015 USD ($)	Feb. 28, 2015 GBP (£)	Feb. 28, 2015 USD ($)	Dec. 31, 2014 USD ($)
Long-term debt
Other (including discounts), denominated in various currencies	$ (5,700)				$ (5,700)			$ 1,700
Total long-term debt	3,037,700				3,037,700			3,048,800
Less: current portion of long-term debt	(55,600)				(55,600)			(55,000)
Long-term debt excluding current maturities	$ 2,982,100				$ 2,982,100			$ 2,993,800
Leverage ratio, maximum	4.00				4.00
Revolving Credit Facility and Bridge Loan
Long-term debt
Fees paid to lenders					$ 27,800
Revolving Credit Facility and Term C Loan
Long-term debt
Redemption and refinancing charges				$ (1,700)
6.75% Senior Notes, due September 2020
Long-term debt
Interest rate (as a percent)	6.75%				6.75%			6.75%
Redemption price of senior notes (as a percent)		103.375%
Total long-term debt								$ 500,000
5.75% Senior Notes, due May 2021
Long-term debt
Interest rate (as a percent)	5.75%				5.75%			5.75%
Redemption price of senior notes (as a percent)		106.096%
Total long-term debt								$ 500,000
5.75% Senior Notes, Due May 2021 And 6.75% Senior Notes, Due September 2020
Long-term debt
Redemption and refinancing charges				$ (55,800)
5.00% Senior Notes, due March 2022
Long-term debt
Interest rate (as a percent)	5.00%				5.00%			5.00%
Total long-term debt	$ 750,000				$ 750,000			$ 750,000
4.00% Senior Notes, due November 2023
Long-term debt
Interest rate (as a percent)	4.00%				4.00%			4.00%
Total long-term debt	$ 1,000,000				$ 1,000,000			$ 1,000,000
5.25% Senior Notes, due June 2025
Long-term debt
Interest rate (as a percent)	5.25%				5.25%
Total long-term debt	$ 1,000,000				$ 1,000,000
Redemption and refinancing charges	(5,000)
Multi-currency revolver, U.S. dollar denominated
Long-term debt
Total long-term debt	100,000				100,000
Term C Loan, euro denominated
Long-term debt
Total long-term debt								92,900
Notes redeemed			$ 92,900
Latapack-Ball Notes Payable (at various rates and terms), denominated in various currencies
Long-term debt
Total long-term debt	193,400				193,400			204,200
Bridge Facility
Long-term debt
Face amount of debt | £						£ 3.3
Revolving Credit Facility
Long-term debt
Face amount of debt							$ 1,000,000
Maximum borrowing capacity of revolving credit facility	2,250,000				2,250,000		$ 3,000,000
Available borrowing capacity under line of credit facility	2,100,000				2,100,000
Revolving Credit Facility | Rexam PLC
Long-term debt
Amount committed to repay certain Rexam debt obligations and settle Rexam's outstanding derivatives	1,600,000				1,600,000
Revolving Credit Facility | Maximum | LIBOR
Long-term debt
Spread (as a percent)			1.75%
Revolving Credit Facility | Minimum | LIBOR
Long-term debt
Spread (as a percent)			1.25%
Accounts receivable securitization agreement, current
Long-term debt
Amount of credit facility outstanding and due on demand	65,000				65,000			110,000
Accounts receivable securitization agreement, current | Maximum
Long-term debt
Maximum borrowing capacity of revolving credit facility	140,000				140,000
Accounts receivable securitization agreement, current | Minimum
Long-term debt
Maximum borrowing capacity of revolving credit facility	90,000				90,000
Short-term uncommitted credit facilities
Long-term debt
Amount of credit facility outstanding and due on demand	157,600				157,600			$ 10,100
Available borrowing capacity under line of credit facility	$ 749,000				$ 749,000