Acquisitions (Details)		0 Months Ended													1 Months Ended			1 Months Ended
	Mar. 31, 2015 Interest rate swap agreements USD ($)	Feb. 17, 2015 Rexam PLC USD ($)	Feb. 17, 2015 Rexam PLC GBP (£)	Feb. 19, 2015 Rexam PLC GBP (£) payment	Feb. 17, 2015 Rexam PLC GBP (£)	Mar. 31, 2015 Rexam PLC Currency exchange option and collar Derivatives Not Designated As Hedging Instruments USD ($)	Mar. 31, 2015 Rexam PLC Currency exchange option and collar Derivatives Not Designated As Hedging Instruments GBP (£)	May 08, 2015 Rexam PLC Interest rate swap agreements USD ($)	May 08, 2015 Rexam PLC Interest rate swap agreements EUR (€)	Mar. 31, 2015 Rexam PLC Interest rate swap agreements Derivatives Not Designated As Hedging Instruments USD ($)	May 08, 2015 Rexam PLC Interest rate floor - Euribor EUR (€)	Feb. 19, 2015 Rexam PLC Minimum GBP (£)	Feb. 19, 2015 Rexam PLC Weighted Average [Member] GBP (£)	Feb. 19, 2015 Rexam PLC Maximum GBP (£)	Feb. 28, 2015 Sonoco USD ($)	Feb. 28, 2015 Unsecured Bridge Loan GBP (£)	Feb. 28, 2015 Revolving Credit Facility USD ($)	Feb. 28, 2015 Term C Loan, euro denominated USD ($)
Acquisitions
Cash paid per share of acquire stock				£ 4.07
Number of shares issued per share of acquire stock				0.04568
Share price					£ 6.10
Weighted average price period		90 days	90 days
Exchange rate of US dollar to pound					1.54
Equity value		6,600,000,000	4,300,000,000
Amount of break payment												43,000,000	129,000,000	302,000,000
Number of break payments				1
Maximum borrowing capacity of revolving credit facility																	3,000,000,000
Debt redeemed																		92,900,000
Face amount of debt																3,300,000,000	1,000,000,000
Notional amount of derivatives	158,000,000					3,100,000,000	2,100,000,000	25,000,000	950,000,000	75,000,000	750,000,000
Business acquired in cash															29,100,000
Contingent cash consideration															11,000,000
Contingent noncash consideration															$ 27,800,000